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Roofing Material Specifications and Details

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					                                                   Division 7




Roofing Material
Specifications and Details
FOURTH EDITION




                 “We’ve Got the Highest Technology to Stop the Smallest Leak”
                                    INTRODUCTION / INDEX

      All specifications, materials, infor-                     before, during or after application of                   • Storage silos or grain
   mation designs and/or literature con-                        BITEC manufactured products.                                warehouses
   tained herein, which have been writ-                             BITEC, INC. neither accepts nor                      • Structures with cables, struts,
   ten by the Manufacturer, is given for                        recognizes any Warranty other than                          piping or conduits installed
   the sole purpose of aiding the archi-                        its own. BITEC Warranties are not                           between the deck and roof
   tect, designer, roofing contractor and                       transferable unless requested in writ-                      membrane
   specification writer in preparing a sys-                     ing from the Warranty holder, and                        • Structures without positive
   tem to suit various needs when using                         approved in writing by BITEC, INC.                          drainage or with evaporative
   BITEC products as roofing membrane                                                                                       cooling systems
                                                                    Approval and acceptance for war-
   systems.                                                                                                              • Plywood decks less than
                                                                ranty will only be given by BITEC                           1⁄2” thick
      BITEC does not state, infer or imply                      Manager of Technical Services.
   that BITEC and/or its representatives                        BITEC will not issue material and                        • Certain lightweight insulating
   are engineers, designers or architects,                      labor warranties for membrane or                            concrete decks without the
   and that the information contained                                                                                       proper venting.
                                                                assemblies installed over the follow-
   herein is the definitive method of appli-                                                                             • Membranes under any type tile,
                                                                ing conditions:
   cation, however, the specifications                                                                                      shingles or pavers
   contained herein are minimums for                            • Swimming pools
                                                                • Interior high humidity conditions                         BITEC reserves the right to
   proper installation and for potential
   Warranty issuance.                                           • Existing systems with wet                              amend, change, delete or revise
                                                                   materials                                             any or all of the information, speci-
      BITEC merely supplies this infor-
                                                                • Improperly prepared existing                           fications, designs and materials con-
   mation as a guide and accepts no
   responsibility for design and con-                              roof surfaces                                         tained herein without notice.
   struction of the building, roof deck, or                     • Insulations not approved                                  BITEC will not make inspections
   for uses of BITEC products not within                           by BITEC                                              on non-warranted roofs, nor will we
   these published specifications or rec-                       • Heated tanks                                           write letters stating that we have
   ommendations without prior notice.                           • Pressurized Plenums                                    reviewed plans, details, and/or
      BITEC will absolutely not accept                          • Freezer buildings                                      specifications, and find the condi-
   responsibility for damages to personal                       • Cold storage buildings                                 tions acceptable for the use of our
   property or injuries to individuals                          • Certain non-commercial buildings                       material.

         Questions concerning BITEC products and systems or situations not covered by this manual should be directed to:
                   Technical Services Department • P. O. Box 497, Morrilton, Arkansas 72110 • (800) 535-8597


Our Company ............................................................................2   SECTION 1.06 ....Cants ............................................................17
                                                                                            SECTION 2.00 ....Roof Membrane Installation ..........................17
BITEC PRODUCTS:                                                                             SECTION 2.01 ....Temporary Roofs ..........................................17
The Finest Quality Products .......................................................3        SECTION 2.02 ....Base Sheet Fastening Requirements..............17
BITEC Products, overview .........................................................4         SECTION 2.03 ....BITEC Modified Bitumen (Application)...........17
APP and SBS Membranes..........................................................5            SECTION 2.04 ....Fire Rated Membranes ..................................18
Cold Applied Systems ...............................................................6       SECTION 2.05 ....Base Flashings..............................................18
Cold Applied System Adhesives.................................................7             SECTION 2.06 ....Construction Details .....................................19
System Numbers Guide, Non-Nailable Situations .......................8                      SECTION 2.07 ....Coatings and Surfacings ...............................19
System Numbers Guide, Nailable Situations ..............................9                   SECTION 3.00 ....Nailable Substrate Data.................................20
Cap Sheets Technical Data Chart ........................................10-11               SECTION 3.01 ....Steep Slope Fastening Requirements ............20
Base Sheets Technical Data Chart.......................................12-13                SECTION 4.00 ....General Design Criteria for Roof Decks .........20
BITEC Warranties ....................................................................14     SECTION 4.01 ....Expansion Joints ..........................................21
                                                                                            SECTION 4.02 ....Vapor Retarders............................................21
GENERAL REQUIREMENTS SECTION:                                                               SECTION 4.03 ....Pressurized Plenums ....................................22
SECTION 1.00 ....Handling and Storage ...................................15                 SECTION 4.04 ....Construction Details .....................................22
SECTION 1.01 ....Phasing ........................................................15         SECTION 4.05 ....Other Design Criteria ....................................22
SECTION 1.02 ....Asphalt .........................................................15        SECTION 5.00 ....Roof Decks (General)....................................22
SECTION 1.03 ....Asphalt Application .......................................16              SECTION 5.01 ....Steel Decks...................................................22
SECTION 1.04 ....Asphalt Temperatures ...................................16                 SECTION 5.02 ....Poured Structural Concrete.......................... 23
SECTION 1.05 ....Cut Backs, Emulsions, Reflective Coatings ....17                           SECTION 5.03 ....Pre-Stressed or “TT” Sections ......................23
                                                                                 INDEX
SECTION 5.04 ....Lightweight Insulating Concrete ....................23                            DETAIL #12 ...Area Divider Curb ..............................................42
SECTION 5.05 ....Wood Plank Decks ........................................24                       DETAIL #13 ...Curb Type Expansion Joint ................................43
SECTION 5.06 ....Plywood Decks .............................................24                     DETAIL #14 ...Low Profile Raised Expansion Joint .................. 43
SECTION 5.07 ....Poured Gypsum Decks..................................24                           DETAIL #14A ..Low Profile Prefabricated Expansion Joint ............44
SECTION 5.08 ....Structural Wood Fiber Decks.........................24                            DETAIL #15 ...Thru-Wall Scupper ............................................44
SECTION 5.09 ....Open Beam Ceilings ......................................24                       DETAIL #16 ...Scupper Through Raised Roof Edge ..................45
SECTION 5.10 ....Wood Nailers ................................................25                   DETAIL #17 ...Roof Drain without Lead Flashing ......................45
SECTION 6.00 ....Reroofing Preparation and Field Conditions...25                                   DETAIL #18 ...Roof Drain with Lead Flashing ...........................46
SECTION 6.01 ....Additional Precautions ..................................25                       DETAIL #19 ...Sheet Metal Pan Roof Drain...............................46
SECTION 6.02 ....Insulation .....................................................26                DETAIL #20 ...Skylight, Hatch and Smoke Vent Curbs ..............47
SECTION 6.03 ....Roof Insulation, Double Layer Application.....26                                  DETAIL #21 ...Roof Top Air Handling Units ..............................47
SECTION 6.04 ....Roof Insulation, Mechanical Attachment .......26                                  DETAIL #22 ...Insulated Steel Deck Frame Support ..................48
SECTION 6.05 ....Insulation and Roof System Application ........26                                 DETAIL #23 ...Concrete Deck Frame Support ...........................48
SECTION 6.06 ....Base Sheet Requirements .............................27                           DETAIL #24 ...Pipe Support with Roller Assembly....................49
SECTION 6.07 ....UL Listings ...................................................27                 DETAIL #25 ...Equipment or Sign Support Rail ........................49
SECTION 6.08 ....FM Systems Approval .................................. 27                         DETAIL #26 ...Pipe and Flashing Clearances ............................50
SECTION 7.00 ....Reroofing (Retrofit) ......................................27                     DETAIL #27 ...Mechanical Equipment Stand.............................50
SECTION 7.01 ....Reroofing Specification RGS-01....................27                              DETAIL #28 ...Plumbing Vent Flashing.....................................51
SECTION 7.02 ....Reroofing Specification RSS-02 ....................28                             DETAIL #29 ...Approved One-Way Roof Vent ...........................51
SECTION 7.03 ....Statement of Acceptance...............................28                          DETAIL #30 ...Hot Stack Flashing Curb ....................................52
SECTION 7.04 ....Pressure Relief Vents....................................28                       DETAIL #31 ...Piping Through Roof Deck.................................52
SECTION 8.00 ....Application Safety .........................................28                    DETAIL #32 ...Typical Pitch Pan...............................................53
SECTION 8.01 ....Personnel .....................................................28                 DETAIL #33 ...Split Repair .......................................................53
SECTION 8.02 ....Fire Prevention .............................................28
SECTION 8.03 ....Code Authority..............................................28                    ROOF ASSEMBLY:
SECTION 8.04 ....Equipment Do’s ............................................29                     General Requirements and Introduction...................................54
SECTION 8.05 ....Equipment Don’ts .........................................29                      LAYING PATTERN DIAGRAMS:
SECTION 8.06 ....Building Do’s ................................................29
                                                                                                   #1 ...Typical Three-Ply System Over Insulation .........................55
SECTION 8.07 ....Building Don’ts .............................................29
                                                                                                   #2 ...3-Ply System, Mech. Attached Base Sheet & Insulation.....55
Roof Inspections and Maintenance ..........................................30
                                                                                                   #3 ...Mechanically Attached Base Sheet and Insulation ..............56
Fasteners ................................................................................31
                                                                                                   #4 ...Nailable Deck, without Insulation ......................................56
CONSTRUCTION DETAILS:                                                                              #5 ...Nailable Lightweight Concrete Deck...................................57
Introduction and Table of Drawings ........................................ 32                     #6 ...Concrete Deck - Fully Adhered .........................................57
                                                                                                   #7 ...Mechanically Attached Insulation, Mopped Base Sheet ......58
ROOFING DETAIL DRAWINGS:
                                                                                                   #8 ...Typical Re-Cover System ..................................................58
DETAIL #1 .....Draining Edge with Gutter..................................33
DETAIL #1a....Draining Edge with Gutter, alternate .................33                             BUR MOD SYSTEMS:
DETAIL #2 .....Flat Draining Edge (Drip Edge, Gravel Stop).......34                                Introduction and Index ............................................................59
DETAIL #2a....Flat Draining Edge, alternate .............................34                        Installation Parameters............................................................60
DETAIL #3 .....Raised Roof Edge (with Cant Edge) ...................35                             Approved Products, Specification Numbers Chart ....................61
DETAIL #4 .....Low Raised Edge (with Tapered Edge) ...............35                               Typical Laying Pattern Diagrams ........................................62-63
DETAIL #4a....Low Raised Edge (w/Tapered Edge), alternate...36
                                                                                                   BUR-MOD SPECIFIC DETAIL DRAWINGS:
DETAIL #5 .....Typical Parapet Wall (for 2-ply Systems) ...........36
                                                                                                   BM #1......Draining Edge with Gutter........................................64
DETAIL #6 .....Parapet Wall End Termination............................37
                                                                                                   BM #1a ....Draining Edge with Gutter, alternate .......................64
DETAIL #7 .....Multi-Ply Base Flashing at Plywood Parapets .....37
                                                                                                   BM #2......Flat Draining Edge, Drip edge, Gravel Stop...............65
DETAIL #7A ...High Parapet Base Flashing at Plywood Walls ....38
                                                                                                   BM #2a ....Flat Draining Edge, Drip edge, Gravel Stop, alternate. .65
DETAIL #7B ...High Parapet Base Flashing, Masonry Walls.......38
                                                                                                   BM #7......Multi-Ply Base Flashing at Plywood Parapets ...........66
DETAIL #7C ...Multi Ply Base Flashing, Masonry Walls,............39
DETAIL #7D ...Multi-ply Base Flashing, Stone Capped Walls,....39                                   BM #7A ...Base Flashing at Plywood Parapets..........................66
DETAIL #7E ...Multi-ply Base Flashing, EIFS walls....................40                            BM #7B ...High Parapet Base Flashing at Masonry Walls..........67
DETAIL #8 .....Base Flashing for Wall Supported Deck..............40                               BM #7C ...Multi-Ply Base Flashing at Masonry Parapets
DETAIL #9 .....Base Flashing for Non Wall Supported Deck ......41                                  BM #28....Plumbing Vent Flashing...........................................68
DETAIL #10 ...Base Flashing for Vented Base Sheet .................41                              BM #30....Hot Stack Flashing Curb ..........................................68
DETAIL #11 ...Typical Termination Bar Counterflashing............42                                Notes...............................................................Inside Back Cover

NOTE: Lower case "a" designates an alternate detail, and upper case
letters with detail numbers indicate additional similar details.                               1
                                                             O U R C O M PA N Y

                                       Committed to Service and Excellence
                    BITEC, INCORPORATED                            OUR STATE-OF-THE-ART                                  LET BITEC
                    (Pronounced Bee-tek) is a pre-                   MANUFACTURING                                     SHOW YOU HOW
                  mier modified bitumen membrane                         FACILITY                                 BITEC sponsors many seminars
                  manufacturer for the demanding                    Our plant in Morrilton, Arkansas,          throughout the U.S., on modified bitu-
                  specifier, architect, property owner           features the most recent develop-             men products and systems, featur-
                  or contractor who expects quality              ments in modified bitumen manu-               ing application and hands-on tech-
                  products and service to support their          facturing, along with integrated              niques. You can be informed of
                  business and investment needs.                 technological advances through our            changes in materials, regulations,
                                                                 partners at INDEX. This capability            trends, techniques or potential prob-
                    From our beginning in 1986,
                                                                 provides the customer with the high-          lems that affect your business.
                  BITEC has formulated and produced
                  high quality modified bituminous               est quality products in the market
                                                                                                                         OUR
                  roofing and waterproofing mem-                 today.
                                                                                                                    GREAT LOCATION
                  branes, marketed through distribu-               Our location places us in close                MEANS FAST SHIPPING
P R O D U C T S




                  tion throughout the U.S. and                   proximity to the finest crude oil                Our central U.S. location and close
                  Canada.                                        sources which are recognized as               proximity to truck, rail and barge
                    Our partner in technology, INDEX             being the most compatible asphalt             transportation will allow BITEC to
                  S.p.A., is a world leader in the man-          available for polymer modification.           expedite shipments to any location
                  ufacture of modified bitumen mem-                                                            in the nation, and a mild local climate
                                                                         UNEQUALLED
                  branes. Today, BITEC has become                                                              means minimal shipping problems.
                                                                      TECHNICAL SERVICE
                  well-known throughout the roofing
                  industry as a leader in quality and
                                                                        AND SUPPORT                                   QUALITY PRODUCTS
                  service.                                          Our technical department is                        PROVIDE QUALITY
                                                                 staffed with roofing industry profes-                   WARRANTIES
                     Specializing only in the manufac-
                                                                 sionals, and is always available to              BITEC recognizes your require-
                  ture of modified bituminous mem-
                                                                 discuss your project in a timely and          ments for quality; we constantly
                  branes, BITEC offers our customers
B I T E C




                                                                 thorough manner.                              demand it of ourselves and our prod-
                  over 60 years of combined mem-
                                                                    BITEC is dedicated to providing            ucts. The consistent high quality of
                  brane manufacturing experience,
                                                                 complete project assistance and               our membranes allows us to offer
                  both in development of technology
                                                                 comprehensive technical support in            not only the industry standard, but
                  and the manufacture of roofing and
                                                                 all phases of your construction, from         also warranties that can range in cov-
                  waterproofing membranes.
                                                                 planning to installation.                     erage up to 20 years for workman-
                     BITEC excels in this by concen-                                                           ship and materials.
                  trating only on the manufacture of                BITEC can also supply you with a
                  the finest quality modified bitumi-            wide range of up-to-date technical
                  nous membranes, without diversifi-             publications which cover most types
                  cation to other segments of the roof-          of roofing and waterproofing require-
                  ing industry.                                  ments.




                  Even after 10,000 stress cycles   Bending tests performed at        In repeated puncture tests,      The tensile strength of unreinforced
                  on a section of membrane, this    -22°F (-30°C) proved BITEC        SBS membranes showed             BITEC SBS allows 1500% elong-
                  BITEC material showed no          materials to be excellent for     excellent resistance to pene-    ation without breakage.
                  breakage or tearing.              use in the coldest of climates.   tration and perforation.


                                                                                      2
                THE FINEST QUALITY PRODUCTS
                              Superior Quality from the Start
   Our membranes are produced                       Both reinforcements provide excel-               by heat welding, hot asphalt and cold
with the highest quality made-on-                lent isotropic mechanical strength as               adhesive methods.
purpose polymers obtainable today,               well as puncture resistance.
and blended with distilled asphalt,                                                                      THE MOST MODERN
insuring consistent modification and               BITEC MEMBRANES ARE                                     RESEARCH AND
product performance. Our APP and                      EASY TO APPLY...                                 DEVELOPMENT PROCESS
SBS modified bitumen products yield                  Our full line of APP and SBS mod-                    IN THE COUNTRY...
the best flexibility, durability and             ified bitumen membranes, both cap                     Our quality control laboratory and
workability properties of any product            sheet and base sheet types, are man-                state-of-the-art testing equipment
available.                                       ufactured to form a monolithic mem-                 guarantees an outstanding finished
                                                 brane, rather than being a manufac-                 product. It also insures in the future,
        QUALITY                                  tured laminated product that is pre-sat-            BITEC will be at the forefront of
    REINFORCEMENTS                               urated with oxidized asphalt and con-               developing new and improved prod-
  MAKE THE DIFFERENCE                            taining a high stabilizer content.                  ucts tailored specifically to your
   We use Spunbond Polyester roof-                   The result is a quality membrane                regional requirements. BITEC prod-




                                                                                                                                                            B I T E C
ing fabric as reinforcement for all of           that will lay flat without wrinkles and             ucts meet or exceed product
our polyester reinforced membranes.              insure proper bonding properties,                   approval recognition of the
   High strength fiberglass mat is used          while requiring less heat and less                  Underwriters Laboratories, Factory
in our “FR” (fire-rated) products as             labor to install.                                   Mutual Research, Metro Dade, City
well as in most of our COMPABASE                     BITEC modified bitumen mem-                     and County of Denver and BDA Buro
modified bitumen base sheets.                    branes are available for application                Dakadvies B.V.




                                                                                                                                                            P R O D U C T S
                                                                                                                  A SSI FI ED
                                                                                                             CL


                                                                                                               UL  ®
                                                                                                              R-13231



                                                                                                                          METRO • DADE


                                                                                                                           DADE COUNTY, FL




Ultraviolet microscopy shows a BITEC test        This magnification illustrates inconsistencies in   This photo shows a definite separation of the
batch sample as a homogeneous mixture of         a competitor's test batch largely to non-thor-      distilled asphalt-modifier blend. Membranes
distilled asphalt and special modifiers. This    ough blending of the base elements. The mem-        from this recipe would not have the desired
blend insures a superior molecular composi-      branes produced from this formulation would         qualities of strength, elasticity and long-life that
tion and provides a stronger, and more elastic   probably fail most fatigue and aging tests.         are required to meet our high standards.
finished product.


                                                                        3
                                                        BITEC PRODUCTS

                                        CAP SHEETS
                           APS-4T ......................Torch Applied
                                                                                             FIRE RATED MEMBRANES
                           APM-4T ......................Torch Applied
                                                                                         BITEC “FR” membranes provide UL Class “A”
                           APM-4.5T ...................Torch Applied
                                                                                        fire-rated assemblies for slopes up to 3⁄4" in 12"
                           SPM-4.5T ...................Torch Applied                     (3⁄4":12") without the use of additional coating.
                           SPM-3.5H .....................Mop Applied                           "FR" membranes are reinforced with
                           SPM-4H ........................Mop Applied                             a high-strength fiberglass mat.
                           SPM-4H-250 ................Mop Applied
                           SPS-3H ........................Mop Applied                                MINERAL DESIGN
                           SFM-3.5H .....................Mop Applied                          BITEC’s “Mineral Design” cap sheet
                           SFM-3.5H-FR ...............Mop Applied                           membranes provide an attractive design
                           SFM-4H-FR ..................Mop Applied                              to otherwise ordinary roof areas.
                                                                                                  Mineral design is available in
                                       BASE SHEETS                                             both APP (MDA) and SBS (MDS),
P R O D U C T S




                           FA-2T .........................Torch Applied                     in eight patterns and 13 granule colors.
                           FS-2H ...........................Mop Applied
                           FS-2H Plus ..................Mop Applied                             POLYMER ADHESIVES
                           PS-2H ...........................Mop Applied                For application of mop grade membrane sheets:
                           FS-25 ...........................Mop Applied               PMA-186 for squeegee, roller or brush application
                           FS-40 ...........................Mop Applied                          and trowel grade PMA-2000.
                                                                                            Both are excellent for filling pitch pans
                           BFS-2H ........................Mop Applied
                                                                                              and sealing penetration flashings.
                           FS-2H-FR .....................Mop Applied
                           Beta Base ......Mop or Mech. Attached
B I T E C




                      PRODUCT NAMES - CAP SHEETS                                               PRODUCT NAMES - BASE SHEETS
                         using example: APS-4T                                                     using example: FS-2H
                  A - Modifier ...................................A = APP or S = SBS        F - Reinforcement .................P = Polyester, F = Fiberglass
                  P - Reinforcement.................P = Polyester, F = Fiberglass           S - Modifier ...................................S = SBS or A = APP
                  S - Surface ............................S = Smooth, M = Mineral           2 - Thickness ............................1, 2, or 2.2 Millimeters
                  4 - Thickness .....................2, 3, 3.5, 4 or 4.5 Millimeters        H - Application ....................T = Torch, H = Hot Asphalt
                  T - Application ....................T = Torch, H = Hot Asphalt

                                            FR - Fire Rated; Class “A” UL-Rated Cap sheets and Base sheets



                              Plaza Decks         Flat Roofs          Pitched Roofs         Curved Roofs        Roof Gardens        Re-surfacing




                              Shed Roofs          Metal Decks         Foundations           Sub-flooring        Roofing Details     Parking decks




                                                                                        4
                                 APP MEMBRANES
                   Versatile, Long Lasting and Weather Resistant
  BITEC APP modified bitumen               BITEC APP modified bitumen             mal and ultraviolet light degrada-
membranes are composed of select         membranes may be used to water-          tion, and slow the normal processes
APP polymers blended with distilled      proof prefabricated concrete roofs,      of membrane ageing.
asphalt and reinforced with a            roof systems with metal and wood            BITEC membranes that are
Spunbond Polyester fabric.               decks, thermal insulations, paved        applied by heat welding contain a
  All BITEC APP membranes are            roofs or walkways, foundations, and      polypropylene and/or polyethylene
installed by HEAT WELDING and            constructions such as multi-story        covering to prevent roll blocking and
have the following characteristics:      parking decks.                           provide a site indicator for proper
  • High melting temperatures              BITEC APS-4T, a smooth sur-            welding temperature. These films
  • Flexibility at low temperatures      faced APP modified bitumen mem-          will melt, allowing the APP modi-
                                         brane, can be coated or left             fied bitumen compound to adhere to
  • High resistance to thermal
                                         uncoated according to the specific       itself and the substrate being
    degradation
                                         system specification.                    bonded to.
  • Resistance to ultraviolet light
    degradation.                           BITEC APM-4T, a mineral sur-              The only tools required for appli-




                                                                                                                          B I T E C
                                         faced APP modified bitumen mem-          cation of BITEC APP membranes
  • Excellent substrate adhesion         brane, contains factory installed        are a propane gas fired roofer’s
  • Resistance to most acids and         roofing granules which eliminate the     torch, a round nose roofer’s trowel,
    bases                                need for installing a protective coat-   a hookblade roofer’s knife and a
  • Impermeability to water              ing. Mineral surfacings reduce ther-     pair of fire resistant gloves.



                                 SBS MEMBRANES




                                                                                                                          P R O D U C T S
                 Strong and Flexible for Demanding Applications
  BITEC SBS modified bitumen               It is necessary to have a factory         For heat welded systems, bonding
membranes are composed of                installed or on-site installed sur-      is performed with a propane gas
styrene-butadiene-styrene thermo-        facing on SBS modified bitumen           fired roofer’s torch.
plastic rubber, blended with distilled   membranes, therefore, most of              For hot asphalt applied systems,
asphalt and reinforced with a            BITEC’s SBS modified bitumen             bonding is performed with the use of
Spunbond Polyester fabric or high        membranes come with factory              ASTM D312 Type III, or Type IV
strength fiber glass mat.                installed roofing granules for this      roofing asphalt applied with con-
  BITEC SBS membranes are                purpose.                                 ventional equipment.
manufactured to suit a variety of          With our smooth surfaced prod-           For cold adhesive applied sys-
application methods, and possess         uct SPS-3H, a site installed sur-        tems, bonding should be performed
the following characteristics:           facing of either a flood coat and        with BITEC elastomeric adhesives,
  • Impermeability to water              gravel, or approved roof coating         or with any BITEC approved elas-
                                         must be applied for ultraviolet light    tomeric adhesives. For all applica-
  • Outstanding flexibility at very
                                         protection.                              tions, the membrane should be laid
    low temperatures
                                           OUR SPM and SFM family of              out, aligned and completely bonded
  • Resistance to thermal aging                                                   to the substrate as prescribed in the
                                         membranes contain factory installed
  • Excellent substrate adhesion         roofing granules eliminating the         project’s written specification, and
  • Resistance to perforation            need to add on-site surfacings.          is contingent upon the specific
                                                                                  method of application.
  • Superior elasticity                    Tools required for the proper appli-
                                         cation of these products are detailed     Particular care should be taken to
  • Excellent mechanical and                                                      ensure that all seams or laps are
    fatigue strength                     in the BITEC product manual and
                                         technical bulletins relative to the      completely sealed.
  • Tear resistance                      specific SBS modified bitumen             As always, good roofing practices
  • Dimensional stability                membrane being used.                     should be considered and used.



                                                           5
                                          COLD APPLIED SYSTEMS
                                                              ensuring complete compatibility                         Deck should be built with 1⁄2" min.
                         INTRODUCTION                         between the cap sheet and the                        plywood or 3⁄ 4" min. wood boards.
                                                              adhesive.                                            Deck shall be dry, smooth and free
                      BITEC’s cold adhesive applied                                                                of debris. Deck should be built to pro-
                  SBS modified bitumen membranes                                                                   vide 1⁄4" in 12" minimum slope.
                                                                         GENERAL
                  give you better security and perfor-
                  mance than conventional roll roof-                   REQUIREMENTS                                   Base sheet should be UL Listed
                  ing products made with oxidized                                                                  Type G2 or 43# organic. Base sheet
                  asphalt.                                        Follow all good roofing practices,               must be attached using suitable fas-
                                                              and BITEC specifications when                        teners (i.e. Simplex nails) 9" on the
                      Their application range covers a                                                             laps and stagger nailed 18" o.c. in
                                                              installing adhesive applied mem-
                  variety of slopes and deck configu-                                                              the field.
                                                              branes. Base sheet and insulation
                  rations. From 1⁄4" in 12" up to 3" in
                                                              must be mechanically attached to                        Flashing material shall be the same
                  12", the membrane is functional.
                                                              deck.                                                material used for field membrane.
                  Another advantage is that hot asphalt
                  and open flame are not required for             Use only BITEC SBS modified                      Slopes above 3⁄4:12 require the base
                  installation. This reduces the poten-       bitumen membranes having sand on                     sheet and membrane to be installed
                  tial for fire.                              the bottom surface and granules on                   parallel to the slope with base sheet
                                                              the top surface. (SPM-3.5H or SFM-                   fastened as noted above. The cap
                      A specially formulated cold adhe-
P R O D U C T S




                                                              3.5H).                                               sheet membrane should be blind fas-
                  sive is used to install the membrane.                                                            tened at end laps, 2" from the top
                  After a short curing time the cold              Adhesive may be applied at tem-
                                                                                                                   edge and 6" o.c. across the sheet
                  adhesive applied system forms a             peratures between 55° F and 120° F.
                                                                                                                   width, using nails and tin discs or
                  flexible, durable, watertight system        Only BITEC approved adhesives
                                                                                                                   screws and plates.
                  that will outlast conventional roofing      should be used to install these mem-
                  systems.                                    branes. Follow adhesive manufac-
                                                              turer’s application rates when                         s Performs Better than
                                                              installing these membranes. Typically,                   Conventional Roll Roofing
                             PRODUCTS                         application rates will be 11⁄2 gallons
                                                              p e r 1 0 0 f t 2. A p p l y a d h e s i v e b y       s No Hot Asphalt or Open
                     BITEC SBS modified bitumen               notched squeegee with notches 1⁄4"                       Flame Required
                  membranes SPM-3.5H and SFM-                 long, 1⁄8" deep and spaced 1" on cen-
                  3.5H are recommended for use by                                                                    s Excellent Tear and
                                                              ter, or by using a three knot brush or
                  this method. However, any BITEC                                                                      Puncture Resistance
                                                              notched trowel.
B I T E C




                  sand surfaced SBS modified bitumen                                                                 s Easy to Apply, Easy to
                                                                  Trowel grade flashing cement
                  product can be installed using cold                                                                  Maintain
                                                              should be applied 1⁄8" thick over the
                  applied adhesives. These mem-
                                                              area receiving the flashing membrane                   s Excellent Cold Flexibility
                  branes are tear and puncture resis-
                                                              at an application rate of 1 gal. per 20
                  tant, have excellent flexibility and per-
                                                              sq. ft. or 5 gal. per 100 sq. ft.
                                                      ,
                                                      
                                                      ,
                                                      
                                                      
                  formance as opposed to conventional
                  organic and fiberglass reinforced
                                                      ,
                                                      
                                                      ,
                                                      
                                                      ,
                                                      
                                                      
                                                      
                                                      
                                                      
                                                      ,
                                                      
                                                      
                                                      
                  blown asphalt coated membranes.
                                                      
                                                      ,
                                                      
                                                                                 Wood Deck




                                                            ,
                     BITEC SBS modified bitumen
                  membranes are composed of distilled                     . . . . . . . . . . . . . . . . . . . . . .
                                                                                           . . . . . . Base Sheet, . . . .




                                                          
                                                          ,,
                  asphalt modified with SBS thermo-                                                                  nailed 9'' o.c. at laps,

                  plastic rubber. A high strength fiber-                                    . . . . . . . . . . . . . .
                                                                                                                     stagger nailed 18'' o.c. in field




                                                         ,
                  glass or polyester reinforcement is                                BITEC
                  used as support.                                                     Membrane




                                                           
                                                           
                                                           
                                                                                                         For slopes 1/4" to 3/4"
                            ADHESIVES




                                                         
                                                         
                                                                                . .. . . . .




                     BITEC PMA 186 field grade SBS
                                                                                ...
                                                                                . . .. . . .. . .




                                                                        Wood
                  modified bitumen adhesive is rec-                      Deck




                                                            
                  ommended for use on low slope                                                                  BITEC
                                                                                       . . . . .. .




                                                                                     Base                          Membrane
                  applications, while PMA 2000, trowel                                Sheet




                                                          
                  grade SBS modified bitumen adhe-
                                                                                             . . .. .




                  sive is recommended for all flash-
                  ings and higher slope applications.
                                                                                                   .




                     Both adhesives contain an SBS                                                    For slopes greater than 3/4"
                  thermoplastic rubber as a modifier,

                                                                                     6
         COLD APPLIED SYSTEM ADHESIVES
            PMA-186                                     PMA-2000                            INSTALLATION

     POLYMER MODIFIED                            POLYMER MODIFIED                       The adhesive should be applied
          ADHESIVE                                 FLASHING MASTIC                  using a notched squeegee, brush or
    For Squeegee, roller or                    All Weather, Trowel Grade            trowel, following the guidelines and
      brush application.                                                            application rates set forth in BITEC
                                               PMA-2000 is a fibrated, heavy
                                                                                    technical publications relative to cold
   PMA-186 is a fibrated, heavy bod-        bodied, SBS rubberized, modified
                                                                                    adhesive application.
ied, SBS rubberized, modified               asphalt adhesive, blended with the
asphalt adhesive, blended with the          highest quality bitumen.                    –––––––––––––––––––––––––––
highest quality bitumen.                       USES: For application of mop             Special care should be taken not
   USES: For application of mop             grade SBS modified bitumen mem-         to over-apply the adhesive. Over-
grade SBS modified bitumen mem-             branes and flashing sheets in lieu of   application can cause degradation
brane sheets in lieu of mopping             PMA 186.                                of the membrane.
asphalt.                                       An excellent product for filling         Positive drainage should always
   An excellent product for filling         pitch pans and sealing penetration      be provided in order to prevent
pitch pans and sealing penetration          flashings on SBS roof membranes.        ponding water.




                                                                                                                              B I T E C
flashings on SBS roof membranes.               Torch grade SBS modified                 Never install more than one ply
   Torch grade SBS modified bitu-           bitumen membranes and APP               of membrane in adhesive. Multi-ply
men membranes and APP modi-                 modified bitumen membranes              application is not recommended.
fied bitumen membranes cannot               cannot be installed with this               –––––––––––––––––––––––––––
be installed with this product.             product.                                    A typical system would be com-
   It is highly recommended to alu-            It is highly recommended to alu-     posed of a nailed UL Listed G2 fiber-
minum coat or embed roofing gran-           minum coat or embed roofing gran-       glass reinforced base sheet, with the
ules in the exposed adhesive for UV         ules in the exposed adhesive for UV     adhesive applied BITEC cap sheet




                                                                                                                              P R O D U C T S
protection.                                 protection.                             installed as the finished surface.
                                                                                        DANGER - Keep out of the Reach
                         5 gal. can                                                 of children and pets. Combustible
                                                                                    material. Product is for commercial
                                                                                    or industrial use. Harmful or fatal if
                                                                                    swallowed. Contains petroleum min-
                                                                                    eral spirits.
    3 gal. can
                                                                                        If swallowed, do not induce vom-
                                                                                    iting. Call physician or poison control
                                                                                    center immediately. For contact with
                                                                                    skin, wash with soap and water.
                                                                                        Do not use solvent or mineral spir-
                                                                                    its to clean hands. For eye contact,
                                                                                    flush eyes with copious amount of
                                                                                    water and seek medical attention
                                                                                    immediately.
                                                                                        This material is combustible. Keep
                                                                                    away from heat source, fire or flame.
                                  PMA-186                    PMA-2000               Store materials in original containers.
    Nominal Weight                8.25 lb. / gal.             8.5 lb. / gal         Do not use this container for anything
                                                                                    other than its intended use.
    SBS Rubber                    8% by solids              7.5% by solids              Dispose of empty container as dic-
                                                                                    tated by local code. Close container
                                  Tacks in 20 min., Dries in 2-5 days.              after each use. Avoid breathing mist
    Cure Time
                               Cures within 2 weeks, forming elastic bond.          or vapor. Use in well ventilated area.
                                  67 sq. ft./gal.             1/8" Thick,               –––––––––––––––––––––––––––
     Application Rate                   or                 20 sq. ft. / gal. or         For warranty information govern-
                               1.5 gal./100 sq. ft.        5 gal./100 sq. ft.       ing cold adhesive applied membrane
                                                                                    products, contact BITEC’s Technical
                 Exceeds all parameters of ASTM D 3019 and SCC 153.
                                                                                    Services Department.

                                                               7
                                                       SYSTEM NUMBERS GUIDE

                  NON-NAILABLE (.1)                                               EXAMPLES:                                            WARRANTY PERIOD
                  and NAILABLE (.2)                                                   A concrete deck normally con-                    DESIGNATIONS
                  DEFINITIONS                                                     sidered to be a non-nailable deck,                      All specifications for warranty sys-
                      BITEC defines non-nailable spec-                            would be considered a nailable deck                  tems other than the 10-year systems
                  ifications as those “situations” where                          if insulation or base sheet was                      must be pre-approved by BITEC’s
                  no fasteners are used in the entire                             mechanically fastened.                               Technical Services Department.
                  new roof system.                                                    Therefore, APM-4T.2 designates                      Warranty periods other than 10
                      Nailable specifications include all                         a roof system using mechanical fas-                  years are designated by the addi-
                  “situations” where fasteners of any                             teners and an APM-4T cap sheet.                      tion of .12 for 12 years, .15 for 15
                  type have been used within the new                              APM-4T.1 would designate a roof                      years or .20 to indicate a 20-year
                  roof system.                                                    system without fasteners and an                      warranty period.
                                                                                  APM-4T cap sheet.

                                                            NON-NAILABLE SITUATIONS
                                            For new or replacement systems • For Hybrid Systems, see BUR-MOD Section, pgs. 59-68
P R O D U C T S




                                     System                 Insulation           No. of    Base Sheet        First Ply,        Second Ply,            Third Ply,           Additional
                                     Number                 Required *           Plies    Non-modified       Modified           Modified              Modified             Surfacing

                                    APS-4T.1           10-yr. No;   12-yr. Yes     2      BETA BASE          APS-4T                —                      —              **OPTIONAL
                   10– 12 Y E A R




                                    APM-4T.1           10-yr. No;   12-yr. Yes     2      BETA BASE          APM-4T                —                      —                  —
                                    APM-4.5T.1         10-yr. No;   12-yr. Yes     2      BETA BASE          APM-4.5T              —                      —                  —
                                    SPM-4.5T.1         10-yr. No;   12-yr. Yes     2      BETA BASE          SPM-4.5T              —                      —                  —
                                    SPM-3.5H.1         10-yr. No;   12-yr. Yes     2      BETA BASE          SPM-3.5H              —                      —                   —
                                    SFM-3.5H.1         10-yr. No;   12-yr. Yes     2      BETA BASE          SFM-3.5H              —                      —                   —
                                    SFM-3.5H-FR.1      10-yr. No;   12-yr. Yes     2      BETA BASE          SFM-3.5H-FR           —                      —                   —
                                    SPS-3H.1           10-yr. No;   12-yr. Yes     2      BETA BASE          SPS-3H                —                      —             COAT./GRAVEL


                                    APS-4T.1.15                Yes                 3      BETA BASE          FA-2T               APS-4T                   —                COATING
B I T E C




                                    APM-4T.1.15                Yes                 3      BETA BASE          FA-2T               APM-4T                   —                  —
                   15 YEAR




                                    APM-4.5T.1.15              Yes                 3      BETA BASE          FA-2T               APM-4.5T                 —                  —
                                    SPM-4.5T.1.15              Yes                 3      BETA BASE          PS-2H or FS-2H      SPM-4.5T                 —                  —
                                    SPM-3.5H.1.15              Yes                 3      BETA BASE          PS-2H or FS-2H      SPM-3.5H                 —                  —
                                    SFM-3.5H.1.15              Yes                 3      BETA BASE          PS-2H or FS-2H      SFM-3.5H                 —                  —
                                    SFM-3.5H-FR.1.15           Yes                 3      BETA BASE          PS-2H or FS-2H      SFM-3.5H-FR              —                  —
                                    SPS-3H.1.15                Yes                 3      BETA BASE          PS-2H or FS-2H      SPS-3H                   —                GRAVEL


                                    APS-4T.1.20                Yes                 3      BETA BASE          APS-4T              APS-4T                  —                 COATING
                                    APS-4T.1.20                Yes                 3      NONE               FA-2T               APS-4T               APS-4T               COATING
                                    APM-4T.1.20                Yes                 3      BETA BASE          APS-4T              APM-4T                  —                   —
                                    APM-4T.1.20                Yes                 3      NONE               FA-2T               APS-4T               APM-4T                 —
                                    APM-4.5T.1.20              Yes                 3      BETA BASE          APS-4T              APM-4.5T                —                   —
                                    APM-4.5T.1.20              Yes                 3      NONE               FA-2T               APS-4T               APM-4.5T               —
                   20 YEAR




                                    SPM-4.5T.1.20              Yes                 3      BETA BASE          SPS-3H              SPM-4.5T                —                   —
                                    SPM-4.5T.1.20              Yes                 3      NONE               PS-2H or FS-2H      SPS-3H               SPM-4.5T               —
                                    SPM-3.5H.1.20              Yes                 3      BETA BASE          SPS-3H              SPM-3.5H                —                   —
                                    SPM-3.5H.1.20              Yes                 3      NONE               PS-2H or FS-2H      SPS-3H               SPM-3.5H               —
                                    SFM-3.5H.1.20              Yes                 3      BETA BASE          SPS-3H              SFM-3.5H                —                   —
                                    SFM-3.5H.1.20              Yes                 3      NONE               PS-2H or FS-2H      SPS-3H               SFM-3.5H               —
                                    SFM-3.5H-FR.1.20           Yes                 3      BETA BASE          SPS-3H              SFM-3.5H-FR             —                   —
                                    SFM-3.5H-FR.1.20           Yes                 3      NONE               PS-2H or FS-2H      SPS-3H               SFM-3.5H-FR            —
                                    SPS-3H.1.20                Yes                 3      BETA BASE          SPS-3H              SPS-3H                  —                 GRAVEL
                                    SPS-3H.1.20                Yes                 3      NONE               PS-2H or FS-2H      SPS-3H               SPS-3H               GRAVEL


                                                               light
                  *Exception: Add’l insulation not req'd. over only wt. insulating concrete decks or gypsum decks. **Optional approved roof coating for 10 yrs; coating req'd. for 12 yrs.
                  15 and 20 year warranties are available            for new construction or complete tear-off projects.


                                                                                                         8
                                     SYSTEM NUMBERS GUIDE


                      using example: APS-4T.1.20                                    using example: SFM-3.5H-FR.2.15
                        A = APP Modifier                                              S = SBS Modifier
                        P = Polyester Reinforcement                                   F = Fiberglass Reinforcement
                        S = Smooth Surface                                            M = Mineral Surface
                        4 = 4mm Thick                                                3.5 = 3.5mm thick
                        T = Torch Applied                                             H = Hot Asphalt Applied
                        .1 = Non-Nailable “Situation”                                FR = Fire Rated - UL Class A without add’l. surfacing
                       .20 = 20-Year Warranty                                         .2 = Nailable “Situation”
                                                                                     .15 = 15-Year Warranty



                                                     NAILABLE SITUATIONS
                          For new or replacement systems • For Hybrid Systems, see BUR-MOD Section, pgs. 59-68




                                                                                                                                                                           B I T E C
                   System                Insulation            No. of    Base Sheet        First Ply,        Second Ply,            Third Ply,           Additional
                   Number                Required *            Plies    Non-modified       Modified           Modified              Modified             Surfacing

                  APS-4T.2           10-yr. No;   12-yr. Yes     2      BETA BASE          APS-4T                —                      —              **OPTIONAL
 10– 12 Y E A R




                  APM-4T.2           10-yr. No;   12-yr. Yes     2      BETA BASE          APM-4T                —                      —                  —
                  APM-4.5T.2         10-yr. No;   12-yr. Yes     2      BETA BASE          APM-4.5T              —                      —                  —
                  SPM-4.5T.2         10-yr. No;   12-yr. Yes     2      BETA BASE          SPM-4.5T              —                      —                  —
                  SPM-3.5H.2         10-yr. No;   12-yr. Yes     2      BETA BASE          SPM-3.5H              —                      —                   —




                                                                                                                                                                           P R O D U C T S
                  SFM-3.5H.2         10-yr. No;   12-yr. Yes     2      BETA BASE          SFM-3.5H              —                      —                   —
                  SFM-3.5H-FR.2      10-yr. No;   12-yr. Yes     2      BETA BASE          SFM-3.5H-FR           —                      —                   —
                  SPS-3H.2           10-yr. No;   12-yr. Yes     2      BETA BASE          SPS-3H                —                      —             COAT./GRAVEL


                  APS-4T.2.15                Yes                 3      BETA BASE          FA-2T               APS-4T                   —                COATING
                  APM-4T.2.15                Yes                 3      BETA BASE          FA-2T               APM-4T                   —                  —
 15 YEAR




                  APM-4.5T.2.15              Yes                 3      BETA BASE          FA-2T               APM-4.5T                 —                  —
                  SPM-4.5T.2.15              Yes                 3      BETA BASE          PS-2H or FS-2H      SPM-4.5T                 —                  —
                  SPM-3.5H.2.15              Yes                 3      BETA BASE          PS-2H or FS-2H      SPM-3.5H                 —                  —
                  SFM-3.5H.2.15              Yes                 3      BETA BASE          PS-2H or FS-2H      SFM-3.5H                 —                  —
                  SFM-3.5H-FR.2.15           Yes                 3      BETA BASE          PS-2H or FS-2H      SFM-3.5H-FR              —                  —
                  SPS-3H.2.15                Yes                 3      BETA BASE          PS-2H or FS-2H      SPS-3H                   —                GRAVEL


                  APS-4T.2.20                Yes                 3      BETA BASE          APS-4T              APS-4T                  —                 COATING
                  APS-4T.2.20                Yes                 3      NONE               FA-2T               APS-4T               APS-4T               COATING
                  APM-4T.2.20                Yes                 3      BETA BASE          APS-4T              APM-4T                  —                   —
                  APM-4T.2.20                Yes                 3      NONE               FA-2T               APS-4T               APM-4T                 —
                  APM-4.5T.2.20              Yes                 3      BETA BASE          APS-4T              APM-4.5T                —                   —
                  APM-4.5T.2.20              Yes                 3      NONE               FA-2T               APS-4T               APM-4.5T               —
 20 YEAR




                  SPM-4.5T.2.20              Yes                 3      BETA BASE          SPS-3H              SPM-4.5T                —                   —
                  SPM-4.5T.2.20              Yes                 3      NONE               PS-2H or FS-2H      SPS-3H               SPM-4.5T               —
                  SPM-3.5H.2.20              Yes                 3      BETA BASE          SPS-3H              SPM-3.5H                —                   —
                  SPM-3.5H.2.20              Yes                 3      NONE               PS-2H or FS-2H      SPS-3H               SPM-3.5H               —
                  SFM-3.5H.2.20              Yes                 3      BETA BASE          SPS-3H              SFM-3.5H                —                   —
                  SFM-3.5H.2.20              Yes                 3      NONE               PS-2H or FS-2H      SPS-3H               SFM-3.5H               —
                  SFM-3.5H-FR.2.20           Yes                 3      BETA BASE          SPS-3H              SFM-3.5H-FR             —                   —
                  SFM-3.5H-FR.2.20           Yes                 3      NONE               PS-2H or FS-2H      SPS-3H               SFM-3.5H-FR            —
                  SPS-3H.2.20                Yes                 3      BETA BASE          SPS-3H              SPS-3H                  —                 GRAVEL
                  SPS-3H.2.20                Yes                 3      NONE               PS-2H or FS-2H      SPS-3H               SPS-3H               GRAVEL


                                             light
*Exception: Add’l insulation not req'd. over only wt. insulating concrete decks or gypsum decks. **Optional approved roof coating for 10 yrs; coating req'd. for 12 yrs.
15 and 20 year warranties are available            for new construction or complete tear-off projects.


                                                                                       9
                                                                                    CAP SHEETS
                               ADVANTAGES                                           membranes, available with smooth                sories required for the installation shall
                     BITEC modified bitumen cap sheet                               or mineral surfaces. Modified bitu-             be on hand prior to commencement
                  products are specially designed for                               men compounds are formulated and                of work wherever possible.
                  the modern roofing professional.                                  tested for every batch of product pro-             Any blisters, wet roofing materials,
                  Select distilled asphalt and on-pur-                              duced. All BITEC products are qual-             or deteriorated decking shall be
                  pose made polymers are used in all                                ity control monitored throughout the            removed and replaced.
                  of our blends. Reinforcement is with                              manufacturing process.                             Masonry surfaces and metal sur-
                  polyester fabric or fiberglass mat. Our                               Mineral surfacing can be supplied           faces shall be primed with an ASTM
                  state-of-the-art engineering and tech-                            in a variety of colors. Parting agents          D41 asphalt primer. Primer shall be
                  nology provide you with the highest                               such as talc, sand and polymer films            allowed to dry completely before the
                  quality waterproofing and roofing                                 are used to facilitate application.             membrane is installed.
                  membranes, roll for roll. Combining                               Selvedge edge and ply stripes are
                  this quality with the know-how to get                             provided in various configurations.                        INSTALLATION
                  the job done, BITEC products come                                                                                    Product names for BITEC give the
                  with professional service and excel-                                      PREPARATION                             method of application. All products
                  lent technical assistance.                                           Careful surface preparation is               having T as the ending, such as APS-
                                                                                    important. Surfaces must be clean,
P R O D U C T S




                     Unlike conventional oxidized                                                                                   4T, are for torch application only.
                  asphalt products, BITEC modified                                  visibly dry, smooth and covered with            Products having H as an ending are
                  bitumen cap sheet products are flex-                              a UL Listed G2 base sheet using a               for hot asphalt application as well as
                  ible, easy to install high-performance                            fiberglass reinforcement. All acces-            cold adhesive, such as SPM-3.5H.



                                                                                       APS-4T*               APM-4T**               SFM-3.5H                    SPS-3H
                                                                                    TORCH APPLIED          TORCH APPLIED            MOP APPLIED               MOP APPLIED
                                        MODIFIER                                         APP                    APP                       SBS                       SBS
                    APP = Atactic Polypropylene, SBS = Styrene Butadiene Styrene)


                              APPROX. ROLL SIZE                                      33.5' x 3.28'         32.80' x 3.28'            33.9' x 3.28'             33.5' x 3.28'
                               (Flashing width rolls available)
B I T E C




                                    SEAM WIDTH                                          3" Line            3.5" Selvedge            3.5" Selvedge                  3" Line
                            APPROX. COVERAGE                                            100 ft2                 97 ft2                   100 ft2                   100 ft2
                                   TOP SURFACE                                      Smooth / Talc             Mineral                   Mineral                 Fine Sand
                            (Standard colors; buff, white, black)

                                                                                       Burn-off              Burn-off                     Sand                      Sand
                              BOTTOM SURFACE                                         Polyethylene          Polyethylene
                            NOMINAL THICKNESS                                            4 mm                  4 mm                     3.5 mm                      3 mm
                               NOMINAL WEIGHT                                            90 lb.                107 lb.                   100 lb.                    73 lb.
                                                                                      Spunbond               Spunbond                 Fiberglass                Spunbond
                                REINFORCEMENT                                         Polyester              Polyester                                          Polyester
                                           ASTM D-36
                                                                                    302°F (150°C)          302°F (150°C)           250°F (120°C)             250°F (120°C)
                               SOFTENING POINT
                                            UNI-8202
                                                                                     5°F (-15°C)            5°F (-15°C)             -13°F (-25°C)             -13°F (-25°C)
                               COLD FLEX. TEMP
                                          ASTM D-412                                 Long. / Trans.         Long. / Trans.           Long. / Trans.            Long. / Trans.
                       TENSILE STRENGTH ( LB / IN )                                    100.....70            100.....70                 80.....75                105.....75
                                          ASTM D-412                                 Long. / Trans.         Long. / Trans.           Long. / Trans.            Long. / Trans.
                     % of ELONGATION TO BREAK                                          50.....55              50.....55                 30.....30                 60.....70
                                               *Also available with 5mm thickness; specify APS-5T                 **Also available with 4.5 mm thickness; specify APM-4.5T



                                                                                                      10
                                                            CAP SHEETS
        Torch application is performed by                      Align the roll of membrane by                  PRECAUTIONS
     using a standard propane fired                         completely unwinding. Rewind the              As with any roofing project, safety
     roofer’s torch.                                        roll half way, install by method of       shall be a consideration. The use of
        Hot application is performed by                     design, then install other portion of     propane fired roofing installation
     installing the membrane in ASTM                        roll in the same fashion.                 equipment, molten asphalt and sol-
     D312 Type III, or Type IV asphalt.                        See the individual product speci-      vent based adhesives pose potential
        Cold Adhesive application is per-                   fication for proper side and end lap      fire and burn hazards.
     formed by using BITEC PMA 186, or                      coverage, as well as for the method           Adequate protective clothing such
     PMA 2000 modified bitumen adhe-                        of application.                           as work gloves, long sleeve shirt, long
     sive. Caution: installing both the                        Installation is enhanced due to        pants and durable, flat soled shoes
     base sheet and cap sheet in cold                       flexibility and strength of membrane,     should be worn.
     adhesive is not recommended.                           as the membrane is provided as a              The roofing contractor shall pro-
        The BITEC modified bitumen                          composite sheet.                          vide safety training to all his person-
     membrane shall be installed over a                        At the completion of the day’s         nel covering, but not limited to: the
     previously prepared substrate.                         work, a suitable night dry-in shall be    use and storage of propane, safe
     Substrate with or without insulation                   provided, regardless of weather con-      installation procedures and safe work-
                                                                                                      ing habits.




                                                                                                                                                B I T E C
     shall have a UL Listed Type G2 fiber-                  ditions. It is advisable to only roof
     glass base sheet installed as a base                   an area that can be completed in a            All procedures and training shall
     to receive the BITEC modified bitu-                    typical work day. Never phase the         conform to local, state and federal
     men membrane.                                          roof system.                              requirements.



         SPM-3.5H                     SPM-4H                SPM-4H-250              SPM-4.5T          SFM-3.5H-FR SFM-4H-FR
         MOP APPLIED                MOP APPLIED              MOP APPLIED            TORCH APPLIED      MOP APPLIED         MOP APPLIED




                                                                                                                                                P R O D U C T S
                SBS                        SBS                    SBS                   SBS(1)             SBS                  SBS

          33.9' x 3.28'              32.8' x 3.28'            32.8' x 3.28'         25.58' x 3.28'     33.9' x 3.28'        33.9' x 3.28'

         3.5" Selvedge              3.5" Selvedge            3.5" Selvedge          3.5" Selvedge      3.5" Selvedge       3.5" Selvedge
              100 ft2                     97 ft2                  97 ft2                 75 ft2           100 ft2              100 ft2

             Mineral                     Mineral                Mineral                Mineral            Mineral              Mineral


               Sand                       Sand                    Sand                 Burn-off            Sand
                                                                                    Polypropylene                               Sand
             3.5 mm                       4 mm                   4 mm                  4.5 mm             3.5 mm                4 mm
              100 lb.                    105 lb.                 105 lb.                92 lb.            103 lb.              105 lb.
           Spunbond                    Spunbond                Polyester              Spunbond          Fiberglass           Fiberglass
           Polyester                   Polyester                250 gm2               Polyester

        250°F (120°C)              250°F (120°C)            250°F (120°C)           250°F (120°C)     250°F (120°C)        250°F (120°C)

         -13°F (-25°C)              -13°F (-25°C)            -13°F (-25°C)          -13°F (-25°C)      -4°F (-20°C)         -4°F (-20°C)

          Long. / Trans.             Long. / Trans.           Long. / Trans.         Long. / Trans.    Long. / Trans.       Long. / Trans.
            105.....75                 105.....75              120.....85             120.....85        120.....120          120.....120
          Long. / Trans.             Long. / Trans.           Long. / Trans.         Long. / Trans.    Long. / Trans.       Long. / Trans.
             60.....70                  60.....70               60.....60              60.....70         40.....40            40.....40
(1) New SBS specifically engineered for torch application



                                                                               11
                                                                                    BASE SHEETS
                               ADVANTAGES                                              COMPABASE APP and SBS                            INSTALLATION
                                                                                    modified bitumen base sheets
                     COMPABASE APP and SBS                                          remove the concern that the base            COMPABASE APP and SBS
                  modified bitumen base sheets are                                  sheet, of oxidized bitumen, becomes      modified bitumen base sheets are
                  composed of select distilled bitumen                              the “weak link” in membrane system       installed as per design. As with our
                  and made-on-purpose polymers,                                     performance. Oxidized bitumen            modified bitumen cap sheets the
                  reinforced with polyester fabric or                               coated base sheets do not contain        product name designates the method
                  fiberglass mat.                                                   APP or SBS modifiers. They tend to       of application.
                      COMPABASE APP or SBS mod-                                     be brittle and difficult to work with       For instance: if a product name
                  ified bitumen base sheets eliminate                               during cold temperatures. Modified       ends in T, such as FA-2T, the mem-
                  the concern of compatibility and per-                             bitumen base sheets overcome this        brane is suitable for torch applica-
                  formance between base sheet and                                   problem.                                 tion only. If the product name ends in
                  modified bitumen cap sheet. Modified                                COMPABASE APP and SBS                  H, such as FS-2H, the membrane is
                  bitumen cap sheets that are bonded                                modified bitumen base sheets             suitable for either hot asphalt or cold
                  to oxidized bitumen coated base                                   when used in conjunction with            adhesive application. However, as
                  sheets, especially using the heat                                 BITEC cap sheets of the same             with any base sheet, mechanical
                  welding process, are not totally com-                             modifier give the roof membrane          attachment of the base sheet is also
P R O D U C T S




                  patible. The use of COMPABASE                                     system complete compatibility and        allowed. (For system requirements
                  APP and SBS base sheets elimi-                                    unsurpassed 2-ply modified bitu-         and methods of installation, refer to
                  nates this problem.                                               men system performance.                  technical bulletins in the BITEC




                                                                                       FA-2T                  PS-2H             FS-2H            FS-2H Plus
                                                                                    TORCH APPLIED          MOP APPLIED       MOP APPLIED         MOP APPLIED
                                        MODIFIER                                         APP                    SBS               SBS                 SBS
                    APP = Atactic Polypropylene, SBS = Styrene Butadiene Styrene)


                              APPROX. ROLL SIZE                                      49.2' x 3.28'          49.2' x 3.28'     49.2' x 3.28'       49.2' x 3.28'
B I T E C




                                    SEAM WIDTH                                             3"                    3"                3"                   3"

                            APPROX. COVERAGE                                            150 ft2                150 ft2           150 ft2             150 ft2

                                   TOP SURFACE                                           Sand                   Sand              Sand                Sand

                                                                                     Polyethylene
                              BOTTOM SURFACE                                                                    Sand              Sand                Sand
                                                                                         Film

                            NOMINAL THICKNESS                                            2 mm                  2 mm              2 mm                2.2 mm

                               NOMINAL WEIGHT                                            70 lb.                70 lb.            70 lb.               80 lb.

                                                                                                             Spunbond
                                REINFORCEMENT                                         Fiberglass                               Fiberglass          Fiberglass
                                                                                                             Polyester
                                           ASTM D-36
                                                                                    302°F (150°C)          240°F (116°C)     240°F (116°C)      240°F (116°C)
                               SOFTENING POINT
                                            UNI-8202
                                                                                     14°F (-10°C)          14°F (-10°C)      14°F (-10°C)        14°F (-10°C)
                               COLD FLEX. TEMP
                                          ASTM D-412                                 Long. / Trans.         Long. / Trans.    Long. / Trans.      Long. / Trans.
                       TENSILE STRENGTH ( LB / IN )                                    78.....67             105.....80         80.....70           80.....70
                                          ASTM D-412                                 Long. / Trans.         Long. / Trans.    Long. / Trans.      Long. / Trans.
                     % of ELONGATION TO BREAK                                            6.....6              50.....50          6.....6              6.....6




                                                                                                      12
                                          BASE SHEETS
Product Guide for complete details.)       equipment, molten asphalt and sol-              the same modifier be used together.
                                           vent based adhesives pose poten-                Never mix an APP with an SBS
   Torch application is performed by
                                           tial fire and burn hazards.                     membrane, and vice versa.
using a standard propane fired
roofer’s torch.                               Adequate protective clothing such
                                           as work gloves, long sleeve shirt,                          ADVANTAGES
   Hot application is performed by         long pants and durable, flat soled
installing the base sheet in ASTM          shoes should be worn.                                s System compatibility
D312 Type III, or Type IV asphalt.                                                              s Two-Ply modified bitumen
                                              The roofing contractor shall pro-
   Cold Adhesive application is per-                                                              system
                                           vide safety training to all his per-
formed by using BITEC PMA 186,             sonnel covering, but not limited to:                 s Superior flexibility
or PMA 2000 SBS modified bitumen           the use and storage of propane, safe                 s Excellent weatherability
adhesive. Caution: installing both         installation procedures and safe
base sheet and cap sheet in cold                                                                s Easy to apply
                                           working habits. All procedures and
adhesive is not recommended.               training shall conform to local, state               s Keeps your BITEC modi-
                                           and federal requirements.                              fied bitumen roof system in
        PRECAUTIONS                                                                               total performance
                                             When using COMPABASE APP




                                                                                                                                 B I T E C
  As with any roofing project, safety      and SBS modified bitumen base                        s Warranty periods of up to
shall be a consideration. The use of       sheets it is recommended that only                     twenty years
propane fired roofing installation         base sheet and cap sheet having



       FS-40                   FS-25                      BFS-2H                     FS-2H-FR                 BETA BASE*
    MOP APPLIED              MOP APPLIED               MOP APPLIED                   MOP APPLIED                MOP APPLIED




                                                                                                                                 P R O D U C T S
         SBS                     SBS                         SBS                          SBS                   Oxid. Asphalt

     65.6' x 3.28'           98.8' x 3.28'              49.2' x 3.28'                 49.2' x 3.28'               108 x 36"

           3"                      3"                          3"                          3"                            2"

        200 ft2                 300 ft2                     150 ft2                      150 ft2                   324 ft2

         Sand                    Sand                        Sand                         Sand                      Sand

         Sand                    Sand                        Sand                         Sand                      Sand

        1.5 mm                   1 mm                       2 mm                         2 mm                       1 mm

         80 lb.                  75 lb.                     70 lb.                       70 lb.                     75 lb.

                                                         Spunbond
      Fiberglass              Fiberglass                                               Fiberglass                 Fiberglass
                                                         Polyester

    240°F (116°C)           240°F (116°C)             240°F (116°C)                  240°F (116°C)             210°F (99°C)

    14°F (-10°C)             14°F (-10°C)              14°F (-10°C)                  14°F (-10°C)                    N/A

     Long. / Trans.          Long. / Trans.             Long. / Trans.                Long. / Trans.            Long. / Trans.
       75.....60               75.....60                  105.....80                    80.....70                  50.....55
     Long. / Trans.          Long. / Trans.             Long. / Trans.                Long. / Trans.            Long. / Trans.
         6.....6                 3.....3                   50.....50                     6.....6                    2.....2

                                              *UL Type G2; ASTM D 4601-98, Type II


                                                              13
                                               BITEC WARRANTIES
                      All warranties are “limited”        struction, reroofing or recover pro-         only on new construction or on
                  unless they are explained, termed       jects using either BITEC modified            reroof projects where the existing
                  or titled “unlimited” warranties. Any   systems or certain BITEC BUR-                roof and insulation is completely
                  one limitation makes a warranty         MOD systems.                                 removed down to the deck. Roof
                  “limited”. Most roofing manufactur-        Limited “Insured” Roofing                 insulation may not be reused for
                  ers no longer provide “bonded”          Warranties for 15 and 20 years               these or 15 or 20 year roofs.
                  roofs, but furnish limited roof war-    are only available for new con-                  Contractors are responsible for
                  ranties. Most all roof warranties       struction and reroofing where the            insuring that proper substrate con-
                  have a list of exceptions which         existing roof and insulation are             ditions are provided for the type of
                  “limit” their coverage.                 completely removed down to the               warranty being requested.
                      BITEC offers several types of       roof deck.                                      BITEC Limited “Insured”
                  warranties. Limited Material               This will allow inspection and            Roofing Warranties can only be
                  Warranties (Material Only War-          repairs to the existing deck provid-         obtained by submittal of a Warranty
                  ranties) are available for 10 and 12    ing essentially the same conditions          Request from a BITEC Authorized
                  year periods for all BITEC products     as new construction. These war-              Applicator. This is for approval,
                  except ISA-4T and UDL-40. These         ranties are available for BITEC              BEFORE the project begins. The
P R O D U C T S




                  warranties are normally available       modified systems or certain BITEC            installation must be performed to
                  to the contractor or individual at      BUR-MOD systems.                             BITEC published specifications,
                  time of purchase at one of our dis-                                                  details and any addendum thereto.
                  tributors.                                  Wa r r a n t i e s fo r M I N E R A L
                                                          DESIGN products are covered by                   Approval will be given provided
                     ISA-4T may only receive a 10         a different material only warranty           all criteria for Warranty issuance
                  year Limited Material Warranty          and depending on it’s use may be             has been met. BITEC requires
                  and may not be used within roof         covered by one of the Limited                “Authorized” applicators to carry
                  assemblies to receive a “Limited        “Insured” Roofing Warranties                 proper insurance coverage to
                  ’Insured’ Warranty.”                    because it is essentially an APM-            receive these warranties.
                      UDL-40 is strictly for nailed       4T or SPM-4H product with the                   BITEC warranties are transfer-
                  underlayment use with shingles,         MINERAL DESIGN pattern of                    able only when approved by the
                  tile applications and some metal        granule surfacing applied in lieu of         Manager of Technical Services.
B I T E C




                  roof applications. No printed war-      t h e s o l i d c o l o r s. M I N E R A L   BITEC should be notified before
                  ranty is available for UDL-40.          DESIGN products are covered in               any property ownership changes.
                    Limited “Insured” Roofing             other publications.                          For additional information call the
                  Warranties for 10 and 12 year peri-       NDL, Full System and NDL/Full              BITEC Technical Services Dept. at
                  ods are available for new con-          System Warranties are available              800-535-8597.




                                      L      E                                 L       E                               L      E
                                   MP                                       MP                                      MP
                             SA                                      SA                                       SA




                                                                             14
                                GENERAL REQUIREMENTS
                 section 1.01



                                         reduce the potential of membrane       Under no circumstance should you
        SECTION 1.00
                                         coatings cracking during their han-    double stack SBS modified bitu-
         HANDLING                        dling and application.                 men products.
        AND STORAGE                         BITEC recommends that rolls           All necessary precautions have
                                         be applied only when ambient tem-      been taken to insure that BITEC
   All BITEC modified bitumen
                                         peratures are above 40°F for all       products leave the plant in good
products in roll form must be stored
                                         APP modified bitumen products,         condition. BITEC, INC. will not be
on end to prevent damage to roll
                                         and 30°F for all SBS modified bitu-    responsible for damage to prod-
ends and prevent roll flattening.
                                         men products.                          ucts due to circumstances and
Rolls stored on their sides will flat-
ten and stick together, making              Nevertheless, application of        events beyond our control; includ-
them very difficult to apply.            membranes may be done below            ing damage in transit, storage at




                                                                                                                       G E N E R A L
                                         the recommended minimums, but          distributors or contractors ware-
   All BITEC membranes have pro-
                                         certain minimum precautions must       houses or on jobsites.
tective surfacings such as mineral
                                         be taken.
granules, films, sand or talc which
act as a release. Mineral surfaced          When application of membrane               SECTION 1.01
products must be stored on end           occurs at lower ambient tempera-
with the selvage edge up away            tures, the following precautions                  PHASING
from supporting surfaces. Rolls          must be followed:                        The practice of ‘phasing’ is not
stored with the selvage edge down           1) Never throw rolls of mem-        recommended by BITEC under
will be difficult to apply due to        brane on the deck or storage sur-      any circumstance. It is best to
crushing of the selvage edge.            face. Sudden impact of the roll can    install the roofing system as one
                                         cause cracking of the modified bitu-   unit.




                                                                                                                       R E Q U I R E M E N T S
   BITEC modified bitumen mem-
branes must be stored under cover        men coating.                              If precipitation occurs before
with adequate ventilation until             2) When torching, unroll the        completion of the roofing system
immediately before use, away from        membrane slowly to ensure pro-         being installed, the Roofing
weather and the elements. Should         per flow of the coating. (Adjust       Contractor is responsible for seal-
membrane be stored on the job            amount of heat coming from             ing the unfinished roofing system
site, covering of the pallets is         propane torch accordingly.)            in a way to provide protection
essential. Covering must be done            3) When mopping membrane,           from water, and not to interfere
with a tarpaulin or similar cover-       care must be taken to ensure that      with the successful completion of
ing. (Black or clear coverings are       the mopping asphalt is of proper       its installation.
not acceptable).                         temperature for bonding mem-              The deck and roofing system
   It may become necessary to split      brane to substrate. See SECTION        must be completely dry before
the protective shrink-wrap bag cov-      1.04 on Asphalt Temperatures.          work commences after precipita-
ering the rolls to provide ventila-         4) Should difficulty in applica-    tion or dew. Installing membrane
tion in order to reduce the possi-       tion arise after following these       over wet surfaces will void warranty
bility of rolls sticking. It is advis-   instructions, discontinue applica-     or disallow its issuance. Roofing
able to store all materials in a         tion until ambient temperature is      over wet surfaces is not a good
shaded area at the job site, even if     above minimums stated above for        roofing practice.
provisions for covering and venti-       the respective products. It is the
lation have been performed.              Roofing Contractor’s responsibil-             SECTION 1.02
   Should any roofing material           ity to make this decision.
become wet or damaged, these                BITEC recommends that pal-                     ASPHALT
materials must not be used; they         letized units of material be stacked      Store all asphalt is such a way
must be replaced.                        one-high. Double stacking is not       as to prevent leakage, moisture or
   During cold weather, we sug-          recommended. However, if space         other contamination and/or dete-
gest that membrane be stored             is limited, APP products can be        rioration of the carton.
inside a warm location until imme-       double stacked provided that a            BITEC will only allow the use of
diately before use. This will help       minimum 3⁄8" plywood sheet sepa-       ASTM D312 Type III or Type IV hot
in the ease of application, and          rates the units to prevent damage.     asphalt for mop application.


                                                          15
                                                                                                            ent air temperature and wind con-
                                  SECTION 1.03                              SECTION 1.04                    ditions. The upper temperature
                                                                                                            range of asphalt cools much faster
                            ASPHALT APPLICATION                              ASPHALT
                                                                                                            than the lower temperature range.
                             BITEC specifies solid interply               TEMPERATURES
                                                                                                               If the asphalt is not at the proper
                          asphalt mopping application at a              Asphalt chills rapidly once it
                                                                                                            temperature at the point of appli-
                          rate of 25 lbs. per 100 sq. ft. All       leaves its container on the roof and
                                                                                                            cation, the membrane may appear
                          moppings shall be continuous and          hits any substrate. Therefore it is
                                                                                                            to be stuck, but not actually be
                          uninterrupted so as not to allow felt     important to maintain the temper-
                                                                                                            bonded together properly and
                          to touch felt at any point.               ature as long as possible for proper
                                                                    application purposes.                   could release some time in the
                             BITEC will allow a variance in                                                 future.
                          weight of asphalt application of +/-          This asphalt serves the two-fold
                                                                    purpose of providing not only the          Proper asphalt application may
                          15% (21 lbs. to 29 lbs.), provided
                                                                    waterproofing layers between rein-      take days to completely cure so
                          application is uniform, as previously
                                                                    forcing plies in BUR-MOD systems,       that it cannot be peeled apart. DO
R E Q U I R E M E N T S




                          noted.
                                                                    but it must also provide a high         NOT TEST the application by peel-
                             It is required that the asphalt be                                             ing it apart for at least two days.
                          maintained at its proper tempera-         enough temperature to properly
                                                                    bond the different plies at their          The following recommendations
                          ture for the specific products at the
                                                                    interface. For this purpose, EVT        for using and heating mopping
                          point of application.
                                                                    temperature is adequate.                asphalt should be followed:
                             For application of insulation, G2
                                                                        Hot asphalt application of ASTM        1) Type III - For slopes from
                          base sheets and fiberglass ply
                                                                    Type IV or Type VI fiberglass ply       dead level up to 1" in 12" (1:12)
                          sheets, follow EVT asphalt tem-
                                                                    sheets and ASTM D 4601 (UL                   Application temperatures:
                          perature guidelines.
                                                                    Type G2) fiberglass base sheets
                              Consult the respective asphalt                                                • Fiberglass base sheet and ply
                                                                    requires careful attention to EVT
                          manufacturer for this information,        temperatures. This information is         sheets 390°F to 425°F
                          which should be provided on each          usually provided on each carton of      • SBS modified bitumen mem-
                          carton or by certificates with each       asphalt or with paperwork on each         branes 435°F to 470°F
                          load of bulk asphalt.                     load. EVT temperatures may vary           2) Type IV - For slopes from
                             Information should include man-        with each load or batch of asphalt.     dead level - up.
                          ufacturer's name, batch number,               Proper bonding of the SBS mod-         Application temperatures:
                          heating temperature, flash point          ified bitumen membranes to one
                          (FP), finished blowing temperature        another or to other surfaces re-        • Fiberglass base sheets and
G E N E R A L




                          (FBT) and equiviscous temper-             quires a higher temperature than          ply sheets 400°F to 475°F
                          ature (EVT).                              used with fiberglass ply sheets and     • SBS modified bitumen mem-
                             For modified bitumen membrane          therefore published EVT tempera-          branes 445°F to 485°F
                          application follow the temperature        tures are not usually high enough
                                                                                                                Machine application of asphalt
                          guidelines set forth in the follow-       to provide the proper bonding
                                                                                                            may require higher temperatures,
                          ing SECTION 1.04, ASPHALT                 required. Asphalt used with SBS
                                                                                                            as much as 25 degrees. Consult
                          TEMPERATURES.                             membranes not only provides an
                                                                                                            asphalt manufacturer for this infor-
                                                                    additional layer of waterproofing
                             Spot mopping attachment of                                                     mation.
                                                                    but it must also provide the heat
                          fiberglass base sheet should be                                                       Asphalt should not be heated
                                                                    necessary to properly bond the
                          performed by placing 9" diameter                                                  above its Flash Point (FP). Heating
                                                                    SBS surface to another surface.
                          circles 18" o.c. in all directions at a                                           above the Finished Blowing Temp-
                                                                    This type of bonding is an "adhe-
                          rate of 15 lbs. per 100 sq. ft.           sive" method as compared to "heat       erature (FBT) should be closely
                             This is best accomplished with a       welding" or "torching" which is a       monitored and only be done for
                          spot mopping machine, otherwise           "cohesive" method.                      short periods of time, not to exceed
                          the application gets very erratic             Proper application of SBS mod-      four (4) hours. Otherwise, the
                          and in many instances may not             ified bitumen membranes requires        asphalt could experience “fallback”
                          produce a truly spot mopped envi-         the use of asphalt at higher tem-       and/or become degraded.
                          ronment with small ribbons of             peratures, typically around 450°F          Close attention to asphalt tem-
                          asphalt between spots.                    to 470°F at the point of application,   perature is also of utmost impor-
                             This could cause blistering at         with the asphalt application not pre-   tance to provide the proper quan-
                          locations where voids occur and           ceding the roll more than four to       tity of asphalt between plies. Job
                          trap moisture.                            six feet, depending on the ambi-        conditions and equipment uses


                                                                                     16
often make it hard to operate within                                                  Non-nailable or insulated sub-
the proper temperature window.                  SECTION 2.00                       strates also require the use of a
However, this does not relieve the                                                 UL Listed G2 fiberglass base
contractor of the responsibility for          ROOF MEMBRANE                        sheet, either solid or spot mopped
proper application.                            INSTALLATION                        with asphalt as required by BITEC
   The quantity of asphalt per mop-         BITEC modified bitumen roof-           roofing system specifications.
ping is critical for several reasons.   ing systems should be applied in              The roofing contractor should
Too much asphalt can cause slip-        accordance with BITEC specifica-           install base sheet in such a way as
page, while too little will not pro-    tions and construction details pro-        to maintain 6" minimum offset of
vide an adequate waterproofing          v i d e d h e r e i n , o r a s m ay b e   end and side laps of the base and
layer.                                  approved in writing as special con-        BITEC finishing membranes.
                                        ditions arise. Installation should be         The base sheet must be
   Also, too little will not carry
                                        done without phasing.                      smooth, completely dr y, well
enough heat and will chill faster,
resulting in lack of proper fusion of                                              adhered and free of debris prior to




                                                                                                                          G E N E R A L
interfacing surfaces. In addition to            SECTION 2.01                       application of the modified bitumen
causing slippage, too much asphalt                                                 membrane.
will cause the waterproofing lay-           TEMPORARY ROOFS
ers to be less flexible which can          When conditions exist in the                   SECTION 2.03
cause cracking of the asphalt layer     field prohibiting the total comple-
which in turn can cause splitting of    tion of the system, the designer,               BITEC MODIFIED
the entire membrane system.             general contractor, building owner,          BITUMEN MEMBRANES
                                        architect and roofing contractor              Over the base sheet install one
                                        should consider the use of a tem-          (1) ply of BITEC modified bitumen
        SECTION 1.05
                                        porary roof.                               membrane with the specified side
     CUT BACKS,                            The temporary roof should con-




                                                                                                                          R E Q U I R E M E N T S
                                                                                   laps and minimum 6" end laps. End
   EMULSIONS AND                        sist of a minimum two (2) plies of         laps should be diagonally stag-
 REFLECTIVE COATINGS                    fiberglass base sheet. Fiberglass          gered and offset a minimum 3' from
   The use of “cut back” cement,        ply sheets are unacceptable for            the preceding membrane end lap.
coatings, plastic cement or adhe-       use in temporary roofs. Type and           Application of the membrane and
sives is prohibited when installing     number of plies will depend upon           base sheet should begin at the low
any BITEC modified bitumen mem-         length of time involved before the         end of the roof.
brane.                                  permanent system is installed.                Layers of successive base sheet
   Emulsions may be used pro-             BITEC reserves the right to              and membrane should be applied
vided emulsion manufacturer’s           accept or reject the use of a tem-         perpendicular to the slope on roofs
application instructions are strictly   porary roof as a vapor retarder in         below 2:12 slope for APP (1:12 for
adhered to.                             the permanent roofing system.              SBS) and parallel to the slope for
                                                                                   roofs greater than 2:12 (1:12 for
   Any reflective coating used as a                                                SBS).
surfacing over BITEC membranes                  SECTION 2.02
                                                                                      For either membrane, parallel
shall be one that is approved by
                                                                                   application requires backnailing.
BITEC. For a list of currently ap-      BASE SHEET FASTENING                       See section 3.01.
proved coatings, contact BITEC’s           REQUIREMENTS
Technical Services Department for                                                          Torch Application:
                                           First ply of the BITEC roofing
details.                                                                              BITEC modified bitumen mem-
                                        membrane system must consist of
   Allow membrane to weather a                                                     branes having “T” as an ending,
                                        at least one (1) ply UL listed Type
minimum 45 days before surfacing                                                   (such as APS-4T), and their related
                                        G2 fiberglass base sheet.
is applied.                                                                        flashing rolls are designed for
                                           The base sheet should be                torch application only.
                                        installed with minimum 2" side and
        SECTION 1.06                                                                  Procedure for installing these
                                        4" end laps. Base sheet should be
                                                                                   membranes is as follows:
                                        mechanically fastened to nailable
             CANTS                      substrates 9" o.c. along the 2" side          1) Unroll the membrane com-
  Cant strips are required on all       lap, and 18" o.c. in two rows, stag-       pletely and align properly.
roofing installations. Fire retardant   gered, 12" in from each edge with             2) Re-roll one end of the roll
cant strips are recommended.            approved fasteners.                        tightly, about half way, maintaining


                                                          17
                          proper alignment.                       heated round nose roofer’s trowel,      modified water proofing mem-
                             3) Torch apply the re-wound por-     re-heating the area with a torch        branes, composed of carefully
                          tion of the roll. Heat should be        and applying pressure to the lap        selected asphalts with superior
                          applied evenly across the face of       forcing the molten bitumen out.         modifying characteristics and
                          the roll, and up the previously         Never attempt to repair laps by         blended with high-quality SBS rub-
                          installed membrane’s top surface        heating the top surface of the          ber, reinforced with a high-strength
                          (where the side lap is formed) in       membrane.                               fiberglass mat.
                          an “L” configuration. While heating,        Hot Mopped Application:                They are mineral surfaced and
                          unroll the roll with uniform down-         BITEC modified bitumen mem-          incorporate a smooth, even appli-
                          ward pressure. An indication that       branes having “H” as an ending,         cation of fine sand on the back sur-
                          the torchable surface has reached       (such as SPS-3H) are designed           face to prevent blocking of rolls and
                          the desired welding temperature         for application with hot asphalt. The   to provide a smooth, acceptable
                          is the observance of the film burn-     roofing contractor must not allow       application surface.
                          off sheet melting, leaving a glossy     mopping asphalt temperatures to            Special Formulation gives "FR"
R E Q U I R E M E N T S




                          surface of modified coating to be       fall below the recommended appli-       membranes a degree of fire resis-
                          bonded to the substrate. If flow of     cation temperature, for the partic-     tance to effectively pass the UL
                          modified coating is obser ved           ular asphalt, at the point of appli-    Class “A” testing without the use
                          before contact with the substrate,      cation. The roofing contractor must     of additional surfacings or protec-
                          the welding temperature is too          not overheat the asphalt to com-
                          great. Welding temperature is cor-                                              tive coatings.
                                                                  pensate for rapid cooling.
                          rect when flow from all seams is                                                   Systems require a minimum of
                          1                                          1) Over the installed fiberglass     one UL TYPE G2 fiberglass base
                           ⁄8" to 1⁄2". Too much flow indicates
                                                                  base sheet, install BITEC hot           sheet, such as BITEC Beta Base,
                          too much heat; while no flow indi-
                                                                  applied modified bitumen mem-           for UL Class “A” rating, for both
                          cates too little heat.
                                                                  branes in a continuous and unin-        non-combustible and combustible
                             4) Rewind the balance of the roll    terrupted mopping of specified
                          and proceed as described above.                                                 decks.
                                                                  asphalt. Moppings should be a
                          End laps should be a minimum 6"         minimum of 25 lbs. per 100 sq. ft.         These membranes can be
                          in coverage and staggered a min-        The mopping asphalt must be             applied by using hot asphalt or by
                          imum 3' from the preceding course.      applied uniformly across the full       using any BITEC approved elas-
                             5) During end lap application,       width of the roll, including the sel-   tomeric cold process adhesive.
                          the underlying membrane’s lower         vage edge of preceding layers.          (When using cold adhesives, fol-
                          outside corner, at the end of the                                               low specific adhesive manufac-
                                                                     2) A small amount of asphalt
G E N E R A L




                          roll, should be trimmed. Then, fol-                                             turer’s installation specifications.)
                                                                  should extend beyond the end and
                          low with the overlapping mem-           side laps to ensure full bonding.          Refer to the most recent UL
                          brane. This is also known as the                                                Roofing Materials & Systems
                                                                     3) Correcting unbonded laps is
                          “T” joint. Corners should be                                                    Directory for fire classifications.
                                                                  the same as for torch applied prod-
                          trimmed at an angle 51⁄2" long from                                                          Packaging:
                                                                  ucts, using a preheated trowel.
                          end of roll to outside edge. Width of
                          trim should be 3" for products             Cold applied adhesives are              Palletized units contain 20 rolls
                          requiring 3" side laps, and 4" for      prohibited for the purpose of           of FR waterproofing membrane.
                          those requir ing 4" side laps.          repairing laps or seams. Plastic        Each unit is shrinkwrapped in a
                          Succeeding courses should com-          cement is prohibited for use with       special polyethylene bag for sta-
                          pletely cover all trimmed edges.        any BITEC modified bitumen              bility and each pallet bears the UL
                          Apply trimmed rolls to provide a        membrane system.                        Label. BITEC recommends that
                          full 6" end lap.                                                                units of material be single stacked.
                                                                      BITEC DOES NOT
                             6) BITEC does not recommend
                                                                   RECOMMEND “FLYING-IN”
                          the use of mechanical torching                                                          SECTION 2.05
                          wagons for application of mem-
                                                                     OR “MOP AND FLOP”
                          brane.                                  METHODS OF APPLICATION.                      BASE FLASHINGS
                             7) All end and side laps should                                                 BITEC requires base flashings
                                                                          SECTION 2.04                    backed up by a fire retardant cant
                          be checked at the end of the work
                          day for proper bonding. Areas not                                               strip at all transitions from a flat
                          having the proper bond, or required     FIRE-RATED MEMBRANES                    roof to walls or curbs. Base flash-
                          flow from seam, should be repaired       SFM-3.5H-FR, SFM-4H-FR                 ings should be a minimum of 8"
                          by gently lifting the lap with a pre-     These membranes are polymer           high, which has been an industry

                                                                                   18
standard for many years.                                                            pendent laboratories such as
                                                 SECTION 2.06                       Underwriters Laboratories, Inc.
   Metal Base Flashings are not
acceptable.                                     CONSTRUCTION                           Refer to UL and FM publications
   Base flashings for all two-ply, 10              DETAILS                          to ensure system meets require-
or 12 year systems should consist                                                   m e n t s a s s p e c i f i e d by c o d e
                                            BITEC flashing rolls are spe-
of at least one additional ply of the                                               requirements. Roof coatings should
                                         cifically designed for use with full
same material as the cap sheet                                                      be applied in two (2) even appli-
                                         rolls of the same type. Flashing
membrane used. For wood wall or                                                     cations, except when specified oth-
                                         rolls come in 1⁄2 and 1⁄4 roll widths.
curb construction, an additional ply                                                erwise by coating manufacturer.
                                         Application is the same for flash-
of base sheet is required also.          ing rolls as it is for full rolls of the      BITEC SPS-3H will require a
                                         same type.                                 BITEC Approved Coating, or flood
   For multi-ply membrane sys-
                                                                                    coat and gravel for UV protection.
tems, the base flashing must con-           Prior to flashing roll application,
                                                                                    Roof coating should be maintained
sist of at least an additional ply of    vertical concrete or masonry sur-
                                                                                    through the life of the system.




                                                                                                                                 G E N E R A L
both the interply membrane(s) and        faces require preparation. Prepare
the cap sheet membranes being            these surfaces by applying asphalt            When design requirements call
used.                                    primer, conforming to ASTM D41,            for additional surfacing to satisfy
                                         at a rate of 1⁄2 gallon per 100 sq. ft.    particular aesthetic or fire resis-
   Base flashings should be con-                                                    tance properties, BITEC recom-
structed with 6" vertical laps every        Primer must completely dry              mends the use of the following
36" maximum. This makes the              before application of flashing mem-        guidelines:
base flashings stronger and eas-         brane commences.
                                                                                               Gravel or Slag:
ier to install correctly.                   Wood surfaces should receive
                                                                                       Surfacing should be opaque,
   If flashings are constructed with     one ply fiberglass base sheet
                                                                                    clean, with moisture content of 2%
membranes installed parallel to the      nailed 8" o.c. with capped nails.
                                                                                    or less and conform to ASTM
wall or curb surface, lengths of




                                                                                                                                 R E Q U I R E M E N T S
                                            All flashings should extend a           1863-93. Slag or gravel should be
flashings should be cut to no longer     minimum of 8" above the roof deck,         1⁄4" to 5⁄8" in diameter applied in a
than eight (8) feet.                     and be nailed 8" o.c. with capped          flood coat of ASTM D312 Type III
   Mop and flop installation of base     nails, along the top edge.                 asphalt.
flashings is not recommended.               Pipe flashings, flashing pans and          Asphalt flood coat should be
They should be either torched or         other metal flashings must have a          applied at a rate of 60 lbs. per 100
mopped in place, or SBS flashings        minimum 4" continuous flange. All          sq. ft. Uniform application of flood
may be installed in SBS modified         metal flanges must be cleaned to           coat is mandatory. Slag or gravel
flashing mastic.                         remove residual oils and lightly           should be applied at a rate of 400
   BITEC SPM-4.5T must be torch          primed with asphalt primer, con-           lbs. per 100 sq. ft., or as may be
applied and may be used with any         forming to ASTM D41, prior to              required for adequate coverage.
asphalt built up roof or BITEC SBS       installation.
                                                                                       Consideration must be given
membrane.                                   Primer must completely dry              to ensure that roof load does not
   BITEC does not issue a sepa-          before application of flashing             exceed building’s structural
rate “flashing endorsement.” On          membrane commences. (See                   capacity.
warranteed projects, base flash-         construction details 1 thru 32 on                  Asphalt Emulsions:
ings up to a maximum height of           pages 32-53.)
                                                                                       Following surface preparation,
24" are included in the warranty.                                                   apply one coat of asphalt emulsion
Flashings over 24" high are con-                 SECTION 2.07                       to the entire membrane and verti-
sidered wall flashings and are not                                                  cal surfaces, at a rate of 3 gallons
covered by the membrane war-                      COATINGS                          per square, unless otherwise indi-
ranty for that project, unless specif-         AND SURFACINGS                       cated by the specific emulsion
ically covered by a special agree-         It is considered a good roofing          manufacturer’s installation specifi-
ment.                                    practice to coat all smooth surface        cations.
   More information about flashing       roofing membranes.                            Apply emulsion using a brush or
installation is available in the sup-      With mineral surfaced mem-               spray applicator, brushing or spray-
plementary pocket size publica-          branes, protective coatings are not        ing towards laps. A minimum of
tion, “Flashing and Application          necessary unless it is required by         45 days must elapse before the
Guide”.                                  code or through testing with inde-         emulsion is applied.


                                                           19
                                Aluminum Coatings:                                                                 and shall be designed to support
                                                                            SECTION 3.01                           live and dead loads, both during
                            For best results, the BITEC
                          approved reflective coating should                                                       and after construction, without
                                                                       STEEP SLOPE
                          be applied in two uniform appli-                                                         excessive deflection or movement
                                                                  FASTENING REQUIREMENTS                           between deck components.
                          cations. However, BITEC recom-
                                                                    BITEC membranes applied on
                          mends that the specific coating                                                             Decks should also be designed
                                                                  slopes exceeding 2:12 for APP
                          manufacturer's installation proce-                                                       and constructed to resist wind uplift
                                                                  membranes and 1:12 for SBS
                          dures be strictly followed.                                                              forces anticipated in the area, and
                                                                  membranes should be installed
                            When considering UL Fire-                                                              provide satisfactory base to which
                                                                  parallel to the slope and fastened
                          Rated systems and products, con-                                                         the roofing can be attached.
                                                                  as followed:
                          sult the UL Roofing Materials and                                                           It is not the responsibility of
                                                                         Nailable Substrates:
                          Systems Directory for individual                                                         BITEC to insure that the deck pro-
                          system requirements.                      Base ply should be mechanically                vides a proper substrate for the
                                                                  fastened as specified in selected                roof system.
R E Q U I R E M E N T S




                            A minimum of 45 days must
                                                                  BITEC roof system specifications.
                          elapse before the reflective                                                                All decks must be prepared for
                                                                  Install BITEC modified bitumen
                          coating is applied.                                                                      retrofit as specified herein, before
                                                                  membrane as specified, blind nail-
                                                                                                                   application of BITEC products.
                                                                  ing end laps 2" in from top edge
                                  SECTION 3.00                    and 6" o.c. with capped nails or                    The responsibility for roof
                                                                  other suitable fasteners.                        deck system design and roof-
                                  NAILABLE                                                                         ing system selection, including
                                                                        Insulated Substrates:
                               SUBSTRATE DATA                                                                      vapor retarder, roof insulation
                                                                      Fiberglass base sheet should be              and expansion joints, lies with
                             It shall be the designer’s respon-
                                                                  applied to the insulation in accor-              the architect, engineer, owner
                          sibility, not BITEC, INC.’s respon-
                                                                  dance with insulation manufac-                   and not with the roofing con-
                          sibility, to consider wind conditions
                                                                  turer’s specifications provided it               tractor or roofing materials
                          in the roofing projects’ geographi-
                                                                  does not conflict with application               manufacturer.
                          cal area.
                                                                  statements set forth herein.                        BITEC personnel are available
                             Current Factory Mutual Loss
                                                                      Base ply should be fastened to               for consultation regarding substrate
                          Prevention Data Sheets 1-7; 1-28;
                          1-28R; 1-29; 1-29R and 1-49, etc.,      wood nailers or through the insu-                surface over which the membrane
                          give information and requirements       lation to the deck, 8" o.c.. Instal-             is to be applied.
                          on proper fasteners and methods         lation of the modified bitumen                      Care should be taken to set
G E N E R A L




                          of installation.                        membrane should proceed as                       drains and outlets in the roof’s
                                                                  specified, blind fastening end laps              expected or designed low areas
                             We recommend that the de-            2" in from top edge and 6" o.c.
                          signer conduct jobsite fastener                                                          with consideration to structural sup-
                                                                  t h r o u g h s u i t a bl e fa s t e n e r s.   ports positioning and anticipated
                          “pull-out” tests in order to deter-
                                                                  Maintain 6" end lap seal beyond                  building settling.
                          mine the most suitable fastener for
                                                                  fastener plates.
                          a specific application.                                                                     Drain flanges shall be
                              Responsibility rests with the                                                        recessed flush to deck surfaces
                          designer, and not BITEC, for this                 SECTION 4.00                           to provide positive drainage and
                          determination, and for determin-                                                         prevent water damming at rims.
                          ing which fastener to use. Where
                                                                           GENERAL                                    A minimum slope after con-
                          nails are used as fasteners, they             DESIGN CRITERIA                            struction of 1⁄4" in 12" (1⁄4:12) is rec-
                          must be capped nails with either              FOR ROOF DECKS                             ommended. Roof deck shall pro-
                          spiral or annular ring shanks.             All substrates which are sched-               vide positive drainage, with out-
                          Smooth shank nails are not              uled to receive BITEC modified                   lets installed to completely
                          acceptable.                             bitumen membranes and roofing                    remove water within 72 hours
                             BITEC will not assume                systems shall be smooth, clean,                  after the rain stops.
                          responsibility for failure or dam-      completely dry and free of sharp                    Installation of conduits or pip-
                          age of the roof system result-          projections and depressions.                     ing above the deck and under the
                          ing from either fastener or deck           Roof decks shall be constructed               roofing membrane is prohibited.
                          material failure, or assume any         in accordance with the deck manu-                Conduit or piping should be
                          responsibility for their perfor-        facturer’s specifications, or applic-            placed under the roof deck or
                          mance.                                  able industry practices, local codes,            above the completed roofing sys-

                                                                                       20
tem, properly suppor ted and                  temperatures.                              Remove insulation from the area
flashed to prevent damage to the                6. In reroofing; at the obvious       directly under the vent opening and
roof system.                                  areas of stress concentrations          refill with loose insulation prior to
   All openings and projections               which have caused splits in exist-      the vent placement and subse-
through the deck should be com-               ing situations.                         quent flashing.
pleted prior to installation of the             7. Drainage design factors.              The following guidelines are
roofing system. Acceptance of a                                                       important to the satisfactory per-
                                                 Area dividers should not be con-     formance of the vapor retarder, and
roof deck to receive the BITEC                sidered as replacements for expan-
modified bitumen membrane sys-                                                        total roofing system:
                                              sion joints. The designer should
tem refers only to deck surface.              always consider the effects of             1) Application techniques and
   When reroofing, all existing               expansion joints and area dividers      all components of the vapor retar-
base flashing and metal flashings             on roof drainage as required.           der used must be compatible with
must be replaced for acceptance                                                       selected roofing system.
                                                 The architect or engineer is
and potential issuance of a                                                              2) Vapor retarder should pro-




                                                                                                                               G E N E R A L
                                              responsible for determining
BITEC Warranty.                               location, number and type of            vide a permeability rating close to
                                              required roof deck expansion            0 perms.
         SECTION 4.01                         joints and/or roof area dividers.          3) Adequate adhesion proper-
                                                                                      ties, to meet design requirements
                                                                                      for wind uplift resistance, must be
     EXPANSION JOINTS                                 SECTION 4.02                    provided by the vapor retarder;
   Expansion joints should be                                                         especially in the absence of me-
installed along the entire length of              VAPOR RETARDERS                     chanically fastened insulations.
the expansion joint, continuing fully            A vapor retarder is not consid-         4) Vapor retarders should be
to the roof deck edge or perime-              ered part of the roofing mem-           fully sealed at all end and side laps,
ter. Low profile, preformed elastic           brane. The decision to use a            securely flashed to roof top pene-




                                                                                                                               R E Q U I R E M E N T S
expansion joints with sheet metal             vapor retarder rests with the           trations, and folded on top of roof
flanges should not be installed on            designer, architect or engineer,        insulation a minimum of 6" at the
a flat roof deck.                             after careful consideration of          perimeters.
   These expansion joints should              design and environmental crite-
                                              ria, including relative interior           5) Designers of the roofing
be installed by fully fastening to                                                    system should consult with
wood nailers placed on each side              humidity, interior temperature,
                                              type of construction, building          Factory Mutual and Underwriters
of the expansion joint, with accom-                                                   Laboratories for fire resistance
panying tapered edge strips to pro-           occupancy and exter ior cold
                                              weather temperature variables.          and wind uplift ratings. BITEC,
vide smooth transition onto the field                                                 INC., expressly states that the
of the roof.                                     As a guide, vapor retarders are
                                                                                      company will not accept any
   Conventional wood curb expan-              generally used where average
                                                                                      responsibility for damage to, or
                                              January temperatures are 40°F or
sion joints should extend a mini-                                                     failure of the roofing system
                                              below and winter season interior
mum 8" above the roof surface.                                                        c a u s e d by t h e u s e , o r t h e
                                              humidity is 45% or greater. The
   Criteria which dictates the use                                                    absence of a vapor retarder.
                                              temperature at the vapor retarder
of expansion joints are as follows:           must be warmer than the dew point          Note: Fiberglass roof insulations
  1. Where the structural design              temperature to prevent condensa-        should not be used as a venting
and/or deck changes direction.                tion from occurring.                    strata over known wet or damp
                                                                                      substrates; whether new con-
   2. Where deck types change:                   Constructions having insulated
                                                                                      struction, or retrofit.
steel deck to concrete deck, or light         ceilings below the deck require
                                              special attention to design and dew        Note: Items in systems which
gauge steel on short spans to
                                              point calculations.                     may require vapor retarders are:
heavy gauge steel on long spans.
                                                 If a vapor retarder is incorpo-          a) Lightweight insulating
   3. Where the design configura-
                                              rated into a roof system, one-way              concrete
tion creates separate wings, such
as: “T”, “L”, or “U” configurations.          pressure release vents should be            b) Gypsum fills
                                              installed at the rate of one (1) vent       c) Wood decks
  4 . A t bu i l d i n g a d d i t i o n s,   per 1000 sq. ft. of roof area to im-
canopies, and exposed overhangs.                                                          d) Pressurized plenums
                                              prove venting of water vapor which
  5. At adjacent building sections            may become entrapped after the              e) Concrete
that are kept at drastically different        construction of the roof system.


                                                               21
                                                                         should be installed in accordance        tional protective layer of BITEC
                                   SECTION 4.03                          with FM Loss Prevention Data             mineral surface membrane is
                                                                         Bulletin 1-49 as a minimum, for          required. It should be installed so
                           PRESSURIZED PLENUMS                           protection from wind damage or           as to denote, a walkway and/or
                             C o n s i d e r a t i o n fo r a va p o r   loss.                                    work area.
                          retarder is necessary here. This                  Base flashings should only be            When walkway materials other
                          will prevent induced vapor trans-              adhered to walls, curbs or nailers       than BITEC membrane are speci-
                          mission through a vented substrate             which are supported by the same          fied for use, an additional protective
                          into the roof system.                          structure as the roof membrane.          layer of BITEC membrane is also
                                                                         Otherwise, differential movement         required. Other materials should
                                   SECTION 4.04                          between structures can cause split-      not be loose laid or adhered to the
                                                                         ting or deterioration of the mem-        BITEC main roof membrane.
                                  CONSTRUCTION                           brane flashing.
                                                                                                                     Walkway materials should be
                                     DETAILS                                Some base and penetration             installed in short sections not over
R E Q U I R E M E N T S




                             Selection and design of roof top            flashings shown in this manual are       6' long with minimum 6" spaces to
                          flashings is critical to the total roof        for 2-ply systems only. Other multi-     permit proper drainage.
                          system’s performance as well as                ply systems require additional plies
                                                                                                                     BITEC recommends the use of
                          the flashings application. Vertical            commensurate with system being
                                                                                                                  a contrasting color for walkway
                          surfaces, metal and wood curbs,                installed. Refer to section 2.05.
                                                                                                                  materials to promote the use of the
                          mechanical equipment platforms                                                          designated walkway to keep roof
                          and supports, roof top accessories                     SECTION 4.05                     traffic to a minimum in unprotected
                          and other penetrations must be                                                          areas.
                          structurally sound, firmly attached                      OTHER
                          and prepared to receive the BITEC                                                          When elevated walkways are
                                                                               DESIGN CRITERIA                    installed on wood blocking or other
                          modified bitumen membrane flash-
                          ing system.                                       BITEC recommends that the             materials, an additional protective
                                                                         roof installation be delayed until       ply of BITEC membrane must be
                             A pressure treated wood nailer,
                                                                         such time that all other trades have     used at each support location for
                          having a minimum width of 41⁄2",
                                                                         completed work which requires            the elevated walkway.
                          should be installed at all eaves,
                                                                         additional traffic across the deck
                          gable ends, and deck openings in
                                                                         or membrane.
                          the roof for securement of the roof-                                                            SECTION 5.00
                          ing membrane, roof fixtures and                   Roofing contractors should mon-
G E N E R A L




                          metal flashings. Wood nailers                  itor newly installed roofs for dam-               ROOF DECKS
                          should be the same thickness                   age when it is known or suspected           An acceptable roof deck surface
                          when roof insulation and/or tapered            that other trades have performed         is considered as being one which
                          edge strip is specified.                       work over completed roofs.               is clean and free of debris, smooth,
                             BITEC does not recommend the                   Specifiers, designers and con-        completely dry and structurally
                          use of pre-formed metal curbs hav-             tractors should consider the use of      sound. All penetrations, curbs,
                          ing horizontal metal flange of less            a temporary roof membrane when           walls and other flashing details
                          than 4" in width when built into the           active traffic during roofing system     should be in place, ready to receive
                          roof membrane.                                 installation is inevitable.              the roofing system before installa-
                             All metal roof flanges must be                 The installation of any type of       tion commences. Roof accessories
                          primed, both top and bottom, with              mechanical equipment on the roof         should be available before the roof-
                          an asphalt primer that conforms to             should be avoided whenever pos-          ing contractor begins work.
                          ASTM D41 criteria. Primer must                 sible. However, when equipment
                          be allowed to dry thoroughly before            is mounted on the roof, it should
                                                                                                                          SECTION 5.01
                          installation. Roof flange must be              be mounted in accordance to
                          securely fastened.                             NRCA designs, but not limited to
                                                                                                                          STEEL DECKS
                                                                         those included in this manual.
                             Mechanical equipment should                                                             Steel decks should be 22 gauge
                          be installed before application of                                                      minimum, and comply with gauge
                          the roofing membrane is performed                           Walkways                    and span requirements as set forth
                          to reduce the potential of damag-                Whenever roof mounted equip-           by deck manufacturer, and installed
                          ing the membrane.                              ment will require frequent traffic for   in accordance with all other indus-
                             Roof edge metal flashings                   inspection or servicing, an addi-        try standards and current FM Loss


                                                                                          22
Prevention Data Bulletin 1-28.          mechanical attachment, spot mop-        for the selected approved mechan-
Refer to FM 1-29 for minimum            ping or strip mopping. Fully adher-     ical fastener at the time the roof-
thickness requirements for various      ing base sheet to the concrete          ing system is installed. It is the
types of roof insulation. Refer to      deck is prohibited.                     responsibility of the roofing con-
BITEC Insulation Section for proper        One way vents are required over      tractor, architect or engineer to
attachment of insulation and roof       all concrete type decks.                request and review testing for fas-
membrane.                                                                       tener withdrawal strength. BITEC
   Steel deck side laps should be                                               merely recommends withdrawal
                                                SECTION 5.03                    tests be done; it’s good roofing
mechanically fastened with self tap-
ping screws at mid-span between                                                 practice.
bar joists or suppor ts. Spans                PRE-STRESSED
                                                                                   4) During curing or application,
exceeding 6' should receive two              OR “T” SECTIONS                    the deck must not be subjected to
(2) fasteners at the side lap. End          Set or camber should not allow      temperatures below 40° F. Frozen
laps should be staggered to pre-        ponding of water. Offsets between       decks must be replaced.




                                                                                                                       G E N E R A L
vent buildup of side laps at cor-       units should not exceed 1⁄ 8 ".
                                                                                   5) Drying time shall be as per
ners, therefore preventing high         Surfaces which are uneven are
                                                                                deck manufacturer’s specifications.
spots over which insulations are to     deemed unacceptable. Suitable
be laid.                                fill should be given to all uneven         6) Lower moisture, quick drying
                                        fits, and sections leveled before       lightweight fills may require less
   All fasteners should be checked
                                        roofing system is applied.              drying time.
before installation of roofing mem-
brane to ensure functionability.            A leveling course of roof insula-      7) Surface must be smooth, vis-
BITEC recommends use of non-            tion should be installed prior to       ibly dry, free of debris, sharp pro-
corrosive fasteners approved by         application of membrane system.         jections and depressions.
Factory Mutual, and/or the insula-      To prevent bitumen drippage, deck          DECK MANUFACTURER AND
tion manufacturer, when insulation      joints must be taped prior to appli-    AUTHORIZED APPLICATOR




                                                                                                                       R E Q U I R E M E N T S
is installed over steel decks. (Refer   cation of roofing system. Refer to      MUST PROVIDE ALL PARTIES
to “Fasteners” page 31.)                Insulation Section for proper           CONCERNED WITH A LETTER
   All steel decks should be cov-       attachment of insulation and roof-      OF CERTIFICATION STATING
ered with a mechanically fastened,      ing membrane.                           T H E D E C K I S R E A DY TO
acceptable roof insulation board.                                               RECEIVE ROOFING SYSTEM
                                                SECTION 5.04                    AND THAT DECK COMPLIES
                                                                                WITH THE ABOVE MINIMUM
        SECTION 5.02                                                            REQUIREMENTS.
                                              LIGHTWEIGHT
      POURED                              INSULATING CONCRETE                      After installation of the roofing
STRUCTURAL CONCRETE                         Caution - This deck contains a      system, the General Contractor
                                        large percentage of moisture,           should provide ventilation to pre-
   All surfaces shall be smooth and
                                        therefore adequate precautions          vent interior moisture from infil-
visibly dry. Wood nailers shall be
                                        must be taken to avoid any              trating the deck during construc-
installed into the deck to provide
                                        entrapment of moisture under            tion, until occupancy by owner.
for securement of the roofing mem-
brane flashings at perimeters, pen-     the roof system.                               Additional Insulation
etrations and other deck openings.          The following guidelines are rec-     When additional insulation is to
   The deck is then prepared by         ommended by BITEC concerning            be installed over lightweight decks,
priming with an asphalt primer con-     the lightweight insulating concrete     a UL Type G2 or G3 fiberglass
forming to ASTM D41 criteria,           deck acceptance before installing       base sheet must be mechanically
which is allowed to completely dry      membrane:                               fastened to the deck. BITEC does
before application of the roofing           1) Decks having a density of less   not recommend direct attach-
system insulation or fiberglass         than 22 lbs. PCF, 1:6 mixture (min.     ment of roof insulation boards
base sheet.                             compressive strength of 125 psi)        to this type of deck. Additional
                                        are unacceptable.                       insulation may be hot mopped to
   BITEC does not allow single ply
                                            2) A minimum of 2" top surfacing    the fastened fiberglass base sheet.
modified bitumen membrane appli-
cation directly over concrete decks.    fill is recommended.                        Installation of the Roofing
Fiberglass base sheet should be             3) Deck must provide a mini-                       System
installed to the concrete deck by       mum 40 lbs. withdrawal resistance         Fiberglass base sheet should be


                                                         23
                          installed with mechanical fasten-
                          ers only, over this nailable sub-
                                                                                 SECTION 5.06                             SECTION 5.08
                          strate. Fasteners must be of a type
                          and size approved by BITEC, and                      PLYWOOD DECKS                           STRUCTURAL
                          the deck manufacturer. Refer to                  Plywood decks should have a               WOOD FIBER DECKS
                          FM publications for type and instal-           nominal thickness of 1⁄2" and be a          Before roofing system applica-
                          lations requirements in order to               min. 4-ply plywood, APA marked,          tion on this type of deck, the deck
                          obtain proper wind uplift resistance           exterior grade.                          must be in proper condition.
                          requirements.                                    All four sides of each piece              Where elevation of deck joints
                                 Pressure Relief Vents                   should bear on and be securely           vary, the deck erector must level
                                                                         nailed, or fastened to joist and         the joints with screed coat mater-
                              A 4" minimum diameter pressure
                                                                         cross blocking. In the absence of        ial as recommended by deck man-
                          relief vent, with 4" minimum flanges
                                                                         cross blocking, two-ply clips per        ufacturer.
                          and weather resistant hood, shall
                                                                         24" max. joist spacing, should be           The deck erector must furnish
R E Q U I R E M E N T S




                          be installed 20 ft. in from perimeter
                          edges. Pressure relief vents                   used.                                    written certification that the deck
                          must be of a one-way design.                     Only wolmanized lumber shall           meets job specification and deck
                          Thereafter, pressure relief vents              be used for blocking. The use of         manufacturer’s requirements.
                          shall be installed 30 ft. o.c. located         petroleum treated lumber is                 Each joint or tongue and groove,
                          directly over 4" diameter openings             strictly prohibited.                     should be stripped according to the
                          cut through the roof system and                   A divorcing layer of rosin paper      following steps:
                          down to insulating fill.                       or sheathing paper is optional. One         Apply a bead of plastic cement
                              Caution: Insulating concrete               ply of UL Type G2 fiberglass base        over the joint, then cover the joint
                          fills over existing roofs, concrete            sheet is required to be secured by       with a 6" wide strip of fiberglass
                          decks or decks without venting                 mechanical fasteners.                    base sheet, centered over the joint
                          are not acceptable. Lightweight                                                         and adhered to the plastic cement.
                                                                           BITEC will not be responsible in
                          deck fills installed incorporating the                                                     Apply fiberglass base sheet in
                                                                         any way for damage to the roofing
                          use of Insulperm or other EPS                                                           lengths not to exceed 18', with 2"
                                                                         system should this deck fail.
                          insulations full of holes and using                                                     side laps, and 4" end laps, end laps
                          the new low moisture content deck                 NOTE: For warranty periods
                                                                                                                  not less than 3' apart, diagonally
                          mixes over unvented steel decks                beyond 10 years, a minimal layer of
                                                                         1
                                                                                                                  staggered.
                          or concrete decks will qualify as a             ⁄2" insulation may be required.
                                                                                                                     Mechanically attach fiberglass
G E N E R A L




                          deck suitable for installing a BITEC
                                                                                                                  base sheet 9" o.c. along the 2" side
                          membrane to be warranteed.                             SECTION 5.07                     lap; 18" o.c. in two staggered rows
                          BITEC does not recommend
                                                                                                                  12" in from both sides.
                          installing these decks over exist-
                                                                                   POURED                            A layer of roof insulation over
                          ing roof membranes.
                                                                                GYPSUM DECKS                      this base sheet is required. Then,
                              B I T E C w i l l n o t a c c e p t a ny
                                                                            To accommodate approved fas-          install the membrane system as
                          responsibility for damage or failure
                                                                         teners used to attach base ply or        specified.
                          of the roofing system caused in
                                                                         insulation to this type of deck, refer      BITEC assumes no responsi-
                          any way by the lightweight insulat-
                          ing concrete deck or fill, or failure to       to Factory Mutual publications for       bility for failure of the roofing sys-
                          follow instructions set forth within           specific fastener and fastener           tem or damage caused in any way
                          this publication.                              applicability.                           by structural wood fiber decks, or
                                                                            Do not apply any roofing sys-         failure to follow instructions set
                                                                         t e m by a d h e s i o n w i t h h o t   forth herein.
                                   SECTION 5.05
                                                                         asphalt, cold applied adhesives
                                                                         or by heat welding to this type                  SECTION 5.09
                             WOOD PLANK DECKS
                                                                         of deck.
                             On wood decks, to prevent bitu-
                          men drippage, install dry sheathing               Deck surface must be smooth,            OPEN BEAM CEILINGS
                          paper. A nominal thickness of 1"               clean and visibly dry, free of pro-         Over open-beam ceilings, the
                          is required for the wood planks.               jections and free of depressions.        insulation shall be covered with
                                                                                                                  1
                          Knotholes shall be covered with                  Poured Gypsum decks require             ⁄2" thick mechanically attached
                          mechanically fastened sheet metal.             one-way vents.                           plywood.


                                                                                          24
                                            6) Surface to receive new roofing      19) Equipment vibration must be
        SECTION 5.10                     system shall provide for positive      corrected.
                                         drainage.                                 20) Membrane to receive wood
       WOOD NAILERS
                                            7) Existing roof insulation shall   blocking pipe support shall be rein-
   Pressure treated wood nailers
                                         be dry and firmly attached.            forced with an additional ply of
of 41⁄2" minimum width should be
                                            8) Existing roof system shall be    modified bitumen membrane, iden-
installed by others at all eaves,
                                         compatible with the new roofing        tical to the membrane used as the
gable ends and openings in the
                                         system.                                cap sheet.
roof for securing of roof plies,
gravel stops, edging and roof fix-          9) Existing membrane shall be          21) Condensate lines shall ex-
tures. The use of petroleum              completely dry, clean and free of      tend to the drains.
treated lumber is strictly pro-          debris, with all surface defects          22) BITEC recommends that
hibited.                                 repaired.                              when retrofitting any existing
   Solid wood blocking of treated           10) Existing roof system with       coal tar pitch roof, a divorcing
                                                                                or separation layer of either ply-




                                                                                                                       G E N E R A L
lumber is required for all insulation    aggregate surfacing should be torn
stops, metal edge flashings, and                                                wood or insulation of 1⁄2" mini-
                                         off. When gravel is removed for
all other metal flanges built into the                                          mum thickness be installed over
                                         recovering, a mechanically attac-
                                                                                the existing roof prior to appli-
roof membrane.                           hed 1 ⁄ 2 " min. thickness recover
                                                                                cation of fiberglass base sheet
                                         board shall be installed.
                                                                                and finishing membrane.
        SECTION 6.00                        11) Replace all existing metal
                                                                                   WARNING: coal tar pitch is
                                         flashings which build into the roof
                                                                                not compatible with any BITEC
REROOFING PREPARATION                    membrane.
                                                                                modified bitumen membrane.
 AND FIELD CONDITIONS                       12) All existing metal counter-
                                                                                   23) The divorcing layer shall be
   The following requirements shall      flashing or coping should be
                                                                                mechanically attached. Refer to
                                         replaced to match existing, as a




                                                                                                                       R E Q U I R E M E N T S
be used in conjunction with good                                                FM publications for mechanical
roofing practices to qualify the         condition of Warranty compliance.
                                                                                attachment to meet FM wind uplift
assembly for issuance of any                13) Expose entire metal flange      requirements.
BITEC workmanship and material           of all drains. Sheet metal drains         Since all field conditions cannot
warranty:                                unsuitable for reuse shall be          be covered in this specification
   1) Test cuts shall always be          removed and replaced to match          book, and due to the complexity of
taken from an existing roof system       existing. Clean and save clamp         preparing reroofing specifications,
for determination of deck type and       rings for re-use; broken clamp rings   BITEC offers assistance in speci-
vapor retarder, insulation type, con-    must be replaced. Stripped or bro-     fication selection and preparation.
dition and attachment; number of         ken bolt holes shall be drilled and
                                                                                   Reroofing projects may qualify
membranes installed, their type          retapped.
                                                                                for Warranty when all installation
and condition; and for presence of          14) Abandoned equipment shall       and procedural criteria are met.
moisture within the system.              be removed and decking required
                                                                                   NOTE: SUBSTRATES WITH
   2) Deck shall be completely dry       shall be installed to match exist-
                                                                                TWO (2) OR MORE ROOFS ARE
and structurally sound.                  ing decking.
                                                                                NOT ELIGIBLE FOR CERTAIN
   3) Parapet walls, perimeter              15) Height and/or clearance of      WARRANTIES.
edges, equipment or other load           flashings at membrane termina-
bearing supports, platforms, curbs,      tions shall be in accordance with
                                                                                       SECTION 6.01
etc., shall be structurally sound.       construction details.
   4) Additional weight of selected         16) Base and wall flashings                 ADDITIONAL
roof systems shall not exceed safe       shall be removed when loose, or               PRECAUTIONS
load design.                             with insufficient clearance under        Existing roof surface - Over an
                                         counterflashing to receive new         existing roof surface proper prepa-
   5) Existing plywood decking not
                                         roof system.                           ration of the surface is essential.
having continuous solid end block-
ing, and decking less than nomi-            17) All roof penetrations should    Blisters, splits, undulations, etc.,
nal 1⁄2" thick, is not an acceptable     have metal flashings.                  must be repaired in accordance
deck. Depending on deck rigidity,           18) Joints in masonry copings       with good roofing practices.
an additional layer of roof insula-      should be recaulked and/or re-           Note: Direct application of any
tion may be required.                    grouted as needed.                     BITEC waterproofing membrane


                                                         25
                          to the existing deck or membrane           BITEC water proofing mem-              owner, or roofing contractor should
                          is not recommended.                     branes installed over low melt point,     consult the insulation manufacturer
                             Defects in the existing roof sys-    or high heat sensitive insulation (i.e.   and/or FM regarding the proper
                          tem such as cracks, crazing, dete-      polystyrene) require a divorcing          number, size, spacing and type of
                          riorated bitumen, and moisture can      layer of 1⁄2" minimum perlite insu-       FM Approved Fasteners.
                          cause failure or damage to the          lation. The divorcing layer must be          BITEC recommends the follow-
                          membrane system. Conditions             mechanically attached through the         ing minimum number of fasteners
                                                                  heat sensitive insulation, followed       for each board size:
                          arising from the above will result
                                                                  by the installation of a UL Type G2
                          in nullification of the Warranty.                                                          2' x 4' – 4 fasteners
                                                                  fiberglass base sheet, hot applied.
                             All existing metal flashing must     See Section 6.05.                                  3' x 4' – 6 fasteners
                          be replaced if existing metal is                                                           4' x 4' – 9 fasteners
                                                                     Note: If at all possible, it is rec-
                          found to be damaged or deterio-                                                            4' x 8' – 15 fasteners
                                                                  ommended that a Type G2 fiber-
                          rating. Metal flashings must be
                                                                  glass base sheet be installed with           First layer of insulation should
                          primed with an asphalt primer, con-
R E Q U I R E M E N T S




                                                                  hot asphalt to an insulation/divorc-      be mechanically attached, and the
                          forming to ASTM D41 criteria,           ing layer that has been mechani-          second layer, where applicable,
                          before membrane is applied.             cally attached. Metal stress plates       installed in asphalt with all joints
                                                                  become extremely hot during the           staggered and offset from the pre-
                                  SECTION 6.02                    torching process, and can harm            ceding layer.
                                                                  the polyester core of the modified           Consult the FM publications for
                                   INSULATION                     bitumen membrane. Plastic stress
                                                                                                            approved fasteners and fastener
                             Insulation used in re-roofing any    plates are not recommended for
                                                                                                            patterns for wind uplift require-
                          existing system must be installed in    use with torch applied products.
                                                                                                            ments in the project’s geographi-
                          accordance with the insulation                                                    cal area.
                          manufacturer’s guidelines for the               SECTION 6.03
                          specific insulation used. BITEC
                                                                                                                    SECTION 6.05
                          does not consider any roof insu-             ROOF INSULATION,
                          lation as being a part of the mem-            DOUBLE LAYER                           INSULATION & ROOF
                          brane system and will not warranty             APPLICATION                          SYSTEM APPLICATION
                          the same.
                                                                     BITEC strongly recommends                 A UL Listed G2, fiberglass base
                             Most forms of insulation are         double layer application of roof          sheet must be installed over insu-
                          compatible with BITEC membrane          insulation, where design of FM            lated assemblies in accordance
G E N E R A L




                          systems, however, a prefaced insu-      specifications require mechanical         with the following guidelines:
                          lation is recommended. Insulation       attachment of the first layer, to
                          must be installed with hot asphalt      reduce membrane stress and ther-                   Urethane and
                          and/or mechanically fastened            mal loss at insulation joints and           Polyisocyanurate Insulations
                          according to the insulation manu-       prevent thermal bridging between             A divorcing layer of wood fiber,
                          facturer’s guidelines.                  mechanical fasteners and the roof-        perlite or fiberglass roof insulation
                             BITEC reserves the right to ac-      ing membrane.                             shall be installed prior to the appli-
                          cept or reject any form of roof insu-      When using rigid urethane or           cation of the BUR-MOD or modified
                          lation as a suitable substrate for      polyisocyanurate insulations, where       bitumen roof membrane system.
                          the attachment of BITEC mem-            the first layer is mechanically              Follow specifications for appli-
                          branes.                                 attached with fasteners containing        cation of the BUR-MOD or modi-
                             Performance of any manufac-          metal stress plates, BITEC rec-           fied bitumen membrane system
                          turer’s insulation is not warranteed    ommends the application of insu-          over the above divorcing layer.
                          by BITEC, nor will BITEC accept         lation be in double layers.                  A separation layer is required
                          responsibility for failures or dam-                                               over all rigid foam insulation.
                          ages to the roof system or mem-                 SECTION 6.04                      Blistering can result if base sheet
                          brane caused by the specific insu-                                                or membrane is directly adhered
                          lation used.                              ROOF INSULATION,                        to this type of insulation.
                             Complete removal of spray ure-       MECHANICAL ATTACHMENT                            Perlite, Wood Fiber or
                          thane foam is required before              When design requirements call                        Fiberglass
                          installation of any BITEC roofing       for mechanically fastening roof            Install these insulations by
                          membrane system.                        insulation, the architect, engineer,      mechanical attachment or by appli-

                                                                                    26
cation in hot asphalt.                                                                      of deck prior to reroofing (retro-
                                                   SECTION 6.07                             fitting), or subsequent damages
   Install fiberglass base sheet in
hot asphalt before commencing the                                                           caused thereof.
                                                     UL LISTINGS
modified bitumen membrane appli-
                                            BITEC maintains an extensive
cation.                                                                                             SECTION 7.01
                                         listing of UL approved roofing
   Half inch (1⁄2") perlite insula-      assemblies, which is continually
tion should not be encapsulated          being updated and is published
                                                                                                  RE-ROOFING
in hot asphalt.                          a n nu a l l y i n t h e “ U L R o o f i n g         SPECIFICATION RGS-01
   When 1⁄2" wood fiber insulation is    Materials and Systems Directory”.                        Over Gravel Surfaces
to be encapsulated in hot asphalt,          BITEC also participates in UL’s                             Procedure:
only high density wood fiber             follow-up program and labels each                    These BITEC General Require-
should be used.                          pallet of product.                                 ments and any supplement thereto
      Expanded - Extruded                   For specific UL Classification                  are considered part of this proce-




                                                                                                                                    G E N E R A L
       Polystyrene (EPS)                 information, contact our Technical                 dure and specification, and must
                                         Services Department.                               be followed.
   Requires a divorcing layer of 1⁄2"
minimum thickness of high density                                                                     Application:
wood fiber or 3⁄4" minimum perlite                 SECTION 6.08                                Before application of membrane
insulation. All joints shall be taped.                                                      begins, consult Section 8.00
   Half inch ( 1⁄ 2") perlite may be      FM SYSTEMS APPROVAL                               “Application Safety”. Do not begin
mechanically fastened over these             Reroofing applications requir-                 application of membrane until you
insulations. Fiberglass base sheet       i n g a s s e m bl i e s t h a t a r e F M         have fully read and completely
shall be installed in hot asphalt,       Approved, using BITEC water-                       understand all procedures and pre-
fully mopped.                            proofing membranes, can be                         cautions detailed.
                                         found within FM publication,                          1) All gravel must be removed




                                                                                                                                    R E Q U I R E M E N T S
   Consult insulation manufacturer       Approval Guide. Information con-
for specific application instructions                                                       by spudding, power brooming and
                                         cerning these assemblies can                       vacuuming.
and restrictions.                        also be obtained through the
                                         BITEC Technical Services Depart-                      2) Follow with application of
                                         ment, or by calling your local rep-                recovery board (divorcing layer)
        SECTION 6.06
                                         resentative.                                       insulation, mechanically fastened,
        BASE SHEET                                                                          according to insulation manufac-
       REQUIREMENTS                                                                         turer’s recommendations, over
                                                   SECTION 7.00                             the existing roof. Hot apply, or
      (ASTM D 4601, Type II)
                                                                                            mechanically attach the UL Type
   BITEC recommends the use of                       RE-ROOFING                             G2 fiberglass base sheet over
a UL-Listed, Type G2 fiberglass                       (RETROFIT)                            the insulation.
base sheet, or a BITEC COMPA-
                                            It is the responsibility of the                    3) Install BITEC modified bitu-
BASE modified bitumen base
                                         architect, engineer, and owner’s                   men membrane as specified.
sheet in all systems using BITEC         r e p r e s e n t a t i ve t o d e t e r m i n e
cap sheet membranes.                     whether an existing roof is struc-                               Coating:
   Please consult Section 2.02 for       turally sound, firmly attached, dry                   Any roof coatings used with
base sheet fastening pattern where       and suitable for recover. Complete                 BITEC waterproofing membranes
FM requirements are not used.            examination is required to deter-                  must be those which have been
   Over insulated or non-nailable        mine what repairs, if any, are nec-                approved by BITEC’s Technical
prepared, primed existing mem-           essary to effectively prepare the                  Services Department.
brane, spot mop an approved vent-        deck for re-roofing.                                  Roof coating must be applied in
ing base sheet or inverted UL G3            All wet insulation, defective                   accordance with the coating man-
fiberglass cap sheet (buffer sheet)      materials and areas not suitable                   ufacturer’s application instructions.
with ASTM D312 Type III asphalt.         for application of the retrofit roof                  BITEC does not warranty roof
Never fully adhere buffer sheet to       system must be repaired or                         coating, nor does BITEC warranty
the existing membrane.                   replaced.                                          any failure of the roof membrane
   BETA BASE is required on all             BITEC accepts no responsi-                      or system arising from either sub-
systems for 15 and 20-year, NDL          bility for failure of the roof sys-                stance or application of the roof
and Full System warranties.              tem due to improper preparation                    coating.


                                                               27
                                                                   insulations or trapped vapor pres-              Your complete understanding of
                                  SECTION 7.02                     sure created by moisture from any             application safety is essential to
                                                                   source heated by the membrane                 the successful completion of any
                                REROOFING
                                                                   installation, interior heat drive or          waterproofing project.
                            SPECIFICATION RSS-02
                                                                   by solar energy. These vents are
                               Over Smooth Surfaces
                                                                   not intended to dry out wet situa-                    SECTION 8.01
                            For reroofing over existing            tions.
                          smooth surfaces, contact BITEC              BITEC recommends the use of                         PERSONNEL
                          Technical Services Department.           spun aluminum vents with one-                    Proper clothing should be worn
                                                                   way valves. Flanges of these units            while applying membrane. Long
                                  SECTION 7.03                     must be primed, top and bottom,               sleeve shirt, long pants, leather or
                                                                   and dry before installation.                  durable shoes with flat soles and
                                  STATEMENT                            Installation should be done in            gloves.
                                OF ACCEPTANCE                      accordance with Detail #29 of this
R E Q U I R E M E N T S




                                                                                                                    Workmen, other than the torch
                             In order for warranty to be in        book or other methods approved                operator, should be no closer than
                          effect when recover situations are       by BITEC.                                     three feet from open flame.
                          called for, BITEC must be con-              Metal vents are recommended
                          tacted for instructions.                 and preferred, however plastic type                   SECTION 8.02
                             Reroofing scenarios vary con-         vents may be acceptable depend-
                          siderably from project to project.       ing on project conditions. Plastic                 FIRE PREVENTION
                          BITEC recommends that the roof-          type vents are not acceptable                    It is the Contractor’s responsi-
                          ing contractor consult the BITEC         with torch applied membranes.                 bility to observe all fire prevention
                          Technical Services Department for           B I T E C w i l l n o t a c c e p t a ny   policies and practices; to train,
                          details and approval before starting     responsibility for damage or failure          instruct and warn employees on
                          any re-roofing project.                  of the roofing system caused in               the use of torch equipment, and
                             Failure to do so can prevent          any way by the omission of or use             any other equipment used in the
                          issuance of Warranty.                    of vents on recover situations.               application of membrane systems.
                                                                                                                    Follow OSHA and NRCA provi-
                                  SECTION 7.04                              SECTION 8.00                         sions for fire protection, including,
                                                                                                                 but not limited to those listed in
                                   PRESSURE                                                                      OSHA 1910.151, 155, 156, 157
G E N E R A L




                                                                      APPLICATION SAFETY
                                  RELIEF VENTS                        Modified bitumen roofing mem-
                                                                                                                 and 1910.110 which apply to torch
                             BITEC requires one-way pres-                                                        application.
                                                                   branes represent the latest in the
                          sure relief vents on all recover sit-    evolution of bituminous roofing and              The Contractor should be famil-
                          uations whether or not a Retrofit         waterproofing systems. Their ease             iar with NFPA 58 “Standard for the
                          Board or other recover or overlay        of application and strength char-             Storage and Handling of Liquified
                          insulation of any type is used.          acteristics make them an excellent            Petroleum Gas”, and any other
                             These vents are also required         choice for waterproofing commer-              appropriate publications of the
                          over all types of concrete decks,        cial and industrial roofs.                    National LP Gas Association.
                          insulating fills of all types and var-      However, most systems require
                          ious combinations of both, for new       the use of hot asphalt or open                        SECTION 8.03
                          or existing construction.                flame propane torches to adhere
                             BITEC will not issue warranties       the membrane.                                      CODE AUTHORITY
                          for new wet fill decks installed over       Whenever working with an open                 The Contractor should be famil-
                          existing roof assemblies or any          flame, applicators must always use            iar with all local codes and design
                          type of concrete decks or other          extreme caution to prevent acci-              guides affecting his service area
                          non-vented decks.                        dents from happening.                         and should obtain any permits nec-
                             One-way vents are required to                                                       essary before work commences.
                                                                      Improper and/or unsafe appli-
                          relieve at least some of the below       cation of waterproofing mem-                     In some areas, torch application
                          membrane pressure.                       branes can result in severe burns,            is prohibited by local and/or state
                             This pressure may develop from        physical injury, property damage              regulations.
                          degassing of foamed plastic type         and loss of property or life.


                                                                                       28
                                                                               for at least one (1) hour after
       SECTION 8.04                          SECTION 8.05                      the last torch is put out, to
                                                                               check for smoldering fire.
     EQUIPMENT DO’S                      EQUIPMENT DON’TS                    • Do use a small torch when
• Do use an adjustable pilot          • Don’t use more than 50' of             flashing near details.
  with complete shut off valve.         hose at one time.
                                                                             • Do heat roofing away from air
• Do use a torch stand to direct      • Don’t use an adjustable regu-          conditioning units, fans, soil
  flame upwards when not in             lator with higher pressure             pipes and all other protrusions
  use.                                  range than that which came             - set in place while hot. Care
• Do use an adjustable, UL              with the torch.                        must be taken to prevent
  Listed, regulator with the          • Don’t operate any pressure             flame from entering or being
  torch.                                gauge beyond the top of its            pulled down into the building
                                        scale, or near excessive heat          interior.
• Do be sure that the torching
  equipment is in proper work-          (150°F) or where there is            • Do use fiberglass base sheet
  ing order at all times.               vibration.                             on all torching applications,




                                                                                                                  G E N E R A L
                                      • Don’t use equipment without            over all substrates.
• Do keep propane tanks in an
  upright position at least 10'         an operating pressure gauge.
  from open flame.                    • Don’t turn a vapor cylinder on              SECTION 8.07
• Do check all torching equip-          its side to increase pressure.
  ment for wear and tear.               LP Gas can escape.
                                                                                 BUILDING DON’TS
  Replace or renew all worn or        • Don’t put out a cylinder fire if
  faulty equipment.                     it cannot be done without tip-       • Don’t torch anything that you
                                        ping the cylinder. Let it burn,        cannot see.
• Do use soap solution to check
  for gas leaks before lighting.        and call the fire department         • Don’t torch over combustible
                                        immediately.                           cants or to wood fiber
• Do use a pressure gauge on                                                   insulation.
  every regulator.                    • Don’t use a cigarette lighter or




                                                                                                                  R E Q U I R E M E N T S
                                        matches to test for leaks.           • Don’t torch near gas lines,
• Do have an ABC dry fire                                                      electrical wires or flammable
  extinguisher on hand at all         • Don’t keep fire extinguisher
                                        next to LP tank. If fire starts at     vents.
  times while torching. One
  extinguisher per torch.               tank, you may not be able to         • Don’t point the torch under
                                        get to the extinguisher!               roof top equipment.
• Do stop work if the scent of
  unburned propane is                 • Don’t fill cylinders that are in     • Don’t point torch into open
  detected. Make necessary              need of repair.                        roof top penetrations.
  repairs.                            • Don’t use a trowel or other          • Don’t use a torch to dry out
• Do close the propane cylinder         tools as a torch stand.                roof surfaces or as a pre-
  valve first, and allow the resid-   • Don’t play with the torch.             heater torch.
  ual propane to burn before          • Don’t use damaged or faulty          • Don’t torch in an enclosed
  closing the torch valve.              equipment.                             area.
• Do instruct all workers on                                                 • Don’t lay operating torch on
  proper method of using fire             WHEN IN DOUBT…                       an open penetration on the
  extinguisher.                             DON’T USE!                         roof surface. Flame can be
• Do use well built products                                                   sucked into the opening.
  having safety features, and                SECTION 8.06                    • Don’t lay torch on the roof sur-
  that are listed by UL or FM.                                                 face or membrane.
• Do keep vent pressure regula-              BUILDING DO’S
  tor clear at all times.             • Do use perlite or non-com-                WORK SAFELY
• Do work safely at all times.          bustible cant strips.                  BY WORKING SMART!
• Do ignite torch with flint or       • Do use fiberglass base sheet
  electric lighter. Matches or          on plywood decks and on
  butane lighters are unsafe            cant strips.
  substitutes.                        • Do use tight fitting felt collar
• Do treat a torch as if it is          on all penetrations and metal
  always burning.                       flashings before torching.
    NEVER LEAVE A                     • At the completion of each
  TORCH UNATTENDED                      day's work, walk the jobsite



                                                      29
                         ROOF INSPECTIONS & MAINTENANCE
                      All roofs, no matter what their     insure that drains, scuppers and              securely fastened and any
                   composition, need periodic inspec-     gutters are kept clear and open for           associated sealants must be
                   tions to insure that they have not     maximum drainage. Additional                  kept in good condition.
                   been damaged by accident or            inspections should be made after           g. All roof membrane seams
                   weather. The following industry        any major storms or when condi-               should be inspected for open
                   accepted guidelines should be          tions may have allowed the roof to            seams, fishmouths, wrinkles,
                   implemented to protect and main-       be affected. Discuss the possibility          etc.
MA IN TENANCE




                   tain a roof for its maximum life and   of an inspection and maintenance
                   and trouble-free durability.           program with your roofing con-             h. All roof areas should be in-
                                                          tractor, general contractor or roof           spected for blisters, splits,
                      1) Restrict roof traffic to only                                                  loose areas, ponding water
                   what is necessary and to a mini-       consultant.
                                                                                                        and debris accumulation.
                   mum; keep a log of everyone going        Other items to check for dam-
                   on the roof. Inform necessary          age or necessary maintenance are           i. Expansion joints and control
                   trades requiring access to be very     as follows:                                   joints should be inspected for
                   careful to protect the roof mem-                                                     open joints, splits and loose
                                                           a. Roof penetrations: Pitch pans             fastenings.
                   brane from falling objects or sol-         need to be kept full and should
                   vent spills. Have a responsible per-       have protective rain collars
                   son check the roof area when oth-          where possible. Where rain               6) Roofs that are under warranty
                   ers have been working on the roof.         collars are not possible, the         by either a specific contractor or
                                                              filler should be coated with an       BITEC should not be repaired or
                      Keep records of the original roof
                                                              aluminum or other suitable            altered by another contactor with-
                   installation dates, all products
                                                              coating. Use only durable filler      out express permission from that
                   installed, repairs, the contractors’
                                                                                                    contractor and only BITEC's autho-
&




                   names, and any other rooftop ac-           products compatible with the
                                                              original filler.                      rized contractors should perform
                   tivity. These records can be an
                                                                                                    work on roofs covered by BITEC
                   invaluable aid in finding leaks at
IN SPEC T IO N S




                                                           b. Metal flashing joints will require    warranties. Otherwise warranty
                   later dates and historical records         periodic replacement of sealant       coverages will be effected.
                   will help determine the leak history       and fasteners may need re-
                   for future repairs and replace-            placement or tightening. Joints           7) When roofs are to be altered
                   ments. You should file these               at gravel guards and fascias          by the addition of any roof top
                   records in a readily accessible            built into the roof membrane          equipment or penetrations, the
                   place.                                     are a particularly troublesome        original installer and/or membrane
                                                              detail which generally need           manufacturer should be consulted
                     2) Do not allow materials or
                                                              periodic maintenance.                 first to insure that only proper mate-
                   equipment to be stored on the roof.                                              rials are used for compatibility.
                   Roofs should not be allowed to          c. Reglets along walls, parapets         Complete information regarding
                   become a junk yard for discarded           or equipment, will need peri-         alterations or repairs should be
                   equipment, empty cans, etc.                odic replacement of sealant           kept on file and provided to the
                      3) When equipment or materi-            a n d fa s t e n e r s m ay n e e d   manufacturer of record.
                   als must be transported over the           replacement or tightening.
                                                                                                      8) Any apparent damage to the
                   roof, protect the affected area with    d. Roof drain clamp rings may
R O OF




                                                                                                    roof should be reported whether or
                   plywood runways.                           need periodic tightening.             not any leaks have been noticed.
                     4) If roof membrane was sur-          e. Base flashing may become              Repairs should be made promptly.
                   faced with a reflective coating, a         loose from fastenings at top             As a reminder, all additions of
                   periodic recoating will protect the        and/or corners and need               equipment, deck penetrations or
                   membrane and reduce energy                 repair. At parapets and some          any change requiring cutting
                   costs.                                     walls, base flashings are gen-        through the BITEC membrane and
                      5) Provide roof inspections at          erally subject to differential        any change which may alter the
                   least twice a year. The more often         movement which causes diag-           proper drainage of the roof must
                   a roof is inspected, the more likely       onal wrinkling and in turn can        have prior approval of BITEC, INC.
                   that any problems will be discov-          cause damage to the base              and the work must be completed
                   ered before they cause extensive           flashing.                             by a BITEC Authorized Roofing
                   damage. Some roofs will inherently      f. Termination bars or compres-          Contractor to maintain the validity
                   require inspections more often to          sion fittings must be kept            of the Warranty.


                                                                           30
                                                              FA S T E N E R S
   Due to a changing fastener mar-                          tern and type to be used.                                                                brane end laps on slopes that
ket, all reference to fasteners in                             BITEC merely requires that fas-                                                       r e q u i r e t h e m e m b ra n e t o b e
BITEC publications will be generic                          teners be of an “approved type,                                                          installed parallel to the slope, must
and will only make reference to cer-                        appropriate for the specific situa-                                                      always be screw and plate design,
tain types and only appropriate                             tion.” BITEC does not specify any                                                        not nails, except for use in decks
designs for the specific deck or sit-                       brand of fasteners but may rec-                                                          where a special type fastener is
uation in which they are to be used.                                                                                                                 required. In some instances, even
                                                            ommend a type for a particular
   Insulation and fastener manu-                            application. On the other hand,                                                          that special type fastener must
facturers spend a great deal of                             BITEC may elect not to approve a                                                         incorporate the use of a larger
time, effort and expense with FM                            certain fastener for any reason.                                                         stress plate.
and UL performing wind uplift tests.
This testing is a continuing process                           For instance, BITEC does not                                                             Since BITEC does not manu-
and the best source of information                          approve the use of nails for secur-                                                      facture, market or distribute fas-
will come from the manufacturers                            ing insulation over 1⁄2" in thickness                                                    teners, BITEC warranties do not
who are involved in the testing.                            and in many instances will require                                                       cover fasteners. Any questions
Specific information is available                           the use of screw and plate type                                                          regarding fasteners should be




                                              
                                              ,
from any of these manufacturers                             fasteners.                                                                               directed to our Technical Services
showing the exact fastening pat-                               Fasteners used to secure mem-                                                         Department at (800) 535-8597.




                                                                                                                                                                                                           F A S T E N E R S
                     SIMPLEX NAIL & MFG.                                                                                         POWER FASTENERS, INC.
                                                                        Lengths:                                      SPIKE
                                                                        1"
                  “TUBE LOC” Nail.                                                                                                                            RAWL                     “NAILIN”
                                                                        1-3/4"
                  Base ply fastener      Nail locked                                                                                                          DECK
                                                                        2-1/2"                                                                                                       ZAMAC OR
                                           in deck                                                                                                            SCREW
                                                                        3"                                                                                                               NYON
                     Nail insert       15/16" dia. cap;                                                                                                       Sizes
                                                                        4-1/2"                                       “WOODIE”
                                         3" dia. disc                                                                                                         #12,
   One piece tube                                                       5-1/2"
                                          available                                                                                                           #14
  with attached disc                                                    6-1/2"
                                                                                                                                                                        RAWL
                              ITW BUILDEX                                                                                                                             “SPEED
                                                                                                                                                                        LOCK”
                                                           "POLYMER
                  “ROOFGRIP”                                GYPTEC"                                                                                                  TOGGLE
                  Self-tapping,                                                                               Plastic
                  self-drilling
                  screw with                                                                                                                          S.S. Sealing
                                                                                                                          Galvalume Steel Plate                                           "POWERLITE"
                  steel or                                                                                                                              Washer
                  plastic
                  plate.            GALVALUME                                                                                          OLYMPIC FASTENERS
                                                                                                Round Washer Plates used with steel deck
                                                                                                 screws, Toggles and "Tectum" screws.
            CONSTRUCTION FASTENERS                                                                                                                                     “CONTITE”

 DEKFAST PLATES:
                                         Stainless Steel
                                               Fastener

                     Steel Round
                                                                                                                     Steel 3S           Plastic 3P
                                                                “DEKLITE”
                                     Deckfast
                                         #12                                                               “Non Thermal Bridging” Fastener
  Steel Hexagonal
                                                                                                        Lightweight Concrete and Cement Fiber

                                   #15 High
                                   Strength                                                                         NTB - 2HWW                          “N-C                     NTB - 1HWO
                                                                                                                    Fastener with                    FASTENER”                  Fastener without
                                                                                                                    Locking Wire                                                 Locking Wire
   Plastic Locking                                                                                                     Barbs                                                         Barbs
                          “Dekfast-14” - use same plates as with Dekfast-12



                  ES PRODUCTS INC.                                            BUILDING MATERIALS                                                        TRU-FAST
                                                                               CORP. OF AMERICA                                                                    DP
   "NAIL-TITE''
                                              ES-90                            “LEXSUCO” Universal plate and clip                                               Screw

                                                                                                                                                           TP                            2" Metal Plate
                                                                                        XSUCO
                                                                                   LE
                                                                                                                                Lengths Available:      Screw
                        ES-60                                                                                                                                                                      U-FAS
                                                                                                                                ————————                                                       R
                                                                                                                                                                                                       T
                                                                                                                                                                                           T
                                                                                                            UNIVE




                                                                                                                                Short   2-3/8"                               CF
                                                                                                                                                                          Screw
                                                                                                        R
                                                                                                        S




                                                                                                L
                                                                                                    A
                                                                                                                                Long    3-5/8"
                                                                                                                                X-Long 4-5/8"
                                                                                                                                                                                         3" Metal Plate




                                                                                           31
                                                       C O N S T R U C T I O N D E TA I L S
                             The following constr uction                          signer, be that an architect, engi-                     mance of the roof system and war-
                          details are provided as minimum                         neer, consultant, owner or roof                         ranty issuance.
                          flashing detail guidelines for use                      membrane installer.                                        All edge flashing details should
                          with BITEC membranes. Specific                             However, for projects requiring a                    be designed and installed to meet
                          field conditions may necessitate                        warranty with unusual conditions,                       the FMRC Loss Prevention Data
                          other details or modifications of                       consult BITEC’s Technical Ser-                          Bulletin #1-49 requirements.
                          these details. BITEC does not                           vices Department regarding such                         However, some local code require-
                          intend that details be limited to the                   conditions.                                             ments may take precedence
                          ones shown in this manual.                                 BITEC requires that good roof-                       regarding certain design items.
                             Interruptions in the roof mem-                       ing practices, such as but not lim-                     Designers and contractors should
                          brane are the most likely place for                     ited to those published in the                          acquaint themselves with pertinent
                          leaks to occur. Membranes should                        NRCA Roofing and Waterproofing                          local code requirements, which
D E T A I L S




                          be installed in accordance with                         Manual, be followed with all instal-                    may change from time to time.
                          time proven methods and details.                        lations. These details have been                           “Alternate” details 1a, 2a & 4a
                              Ultimately, the responsibility for                  developed by the industry over                          in this publication may not meet
                          the design of the actual specific                       many years.                                             specific wind uplift resistance
                          details for any given project is the                        Failure to follow these minimum                     requirements, according to the
                          responsibility of the project de-                       guidelines can jeopardize perfor-                       FMRC 1-49 requirements.

                                                                         TABLE OF DETAIL DRAWINGS
C O N S T R U C T I O N




                                 1. Draining Edge with Gutter                                                           14. Low Profile Raised Expansion Joint
                                1a Draining Edge with Gutter, alternate                                                14A Low Profile Prefab Expansion Joint
                                 2. Flat Draining Edge (Drip Edge, Gravel Stop)                                         15. Thru Wall Scupper
                                2a Flat Draining Edge (Drip Edge, Gravel Stop), alternate                               16. Scupper Thru Raised Roof Edge
                                 3. Raised Roof Edge (with Cant Edge)                                                   17. Roof Drain Without Lead Flashing
                                 4. Low Raised Edge (with Tapered Edge)                                                 18. Roof Drain With Lead Flashing
                                4a Low Raised Edge (with Tapered Edge), alternate                                       19. Sheet Metal Pan Roof Drain
                                 5. Low Parapet Wall                                                                    20. Skylight, Hatch and Smoke Vent Curbs
                                 6. Parapet Wall End Termination                                                        21. Roof Top Air Handling Units
                                 7. High Parapet with Multi-Ply Base Flashing                                           22. Insulated Steel Deck Frame Support
                                7A High Parapet Base Flashing at Plywood Walls                                          23. Concrete Deck Frame Support
                                7B High Parapet Base Flashing at Masonry Walls                                          24. Pipe Support with Roller Assembly
                                7C Multi-Ply Base Flashing at Masonry Parapets                                          25. Equipment or Sign Support Rail
                                7D Multi-Ply Base Flashing, Stone Capped Masonry Walls                                  26. Pipe and Flashing Clearances
                                7E Multi-Ply Base Flashing at EIFS Walls                                                27. Mechanical Equipment Stand
                                 8. Base Flashing for Wall Supported Deck                                               28. Plumbing Vent Flashing
                                 9. Base Flashing for Non-Wall Supported Deck                                           29. Approved One-Way Vents
                               10. Base Flashing for Vented Base Sheet                                                  30. Hot Stack Flashing Curb
                               11. Typical Termination Bar Counterflashing                                              31. Piping Thru Roof Deck
                               12. Area Divider Curb                                                                    32. Typical Pitch Pan
                               13. Curb Type Expansion Joint                                                            33. Split Repair

                          NOTE: Lower case "a" designates an alternate detail, and upper case letters with detail numbers indicate additional similar details.


                                    For other details, not shown, Contact BITEC’s Technical Services Department at (800) 535-8597


                                                                                                          32
1. Draining Edge with Gutter




                                       
                                        
                                        
                                        
                                        
                                       
                                                                                               BITEC flashing membrane
  Modified bitumen or asphalt                                                                  edge strip
     bleed out at both edges
                                                      4" min.        4" min.                   Bleed out at edge
   Metal drip edge with or w/o
raised lip, flange primed top &                                                                BITEC field membrane, turned
  bottom, set in SBS modified                                                                  down over edge with optional
       bitumen cement or heat                                                                  surfacing or coating
     softened APP membrane.
        Nails 3" o.c. staggered.
                   Re: Detail #2
1" minimum height difference




                                                                                                                              CCO N SSTTRRU CCTTI IO N DDEETTAAI ILLSS
                                                                                               Base sheet or modified




                                                                                                                                 O N
                                                                                               bitumen base as required
 Gutter with straps or
 supports as required
    by project details
                                                                                               Roof insulation

                                                                                               Roof deck

        When face dimension                                                                    Wood blocking, secured with
   exceeds 2.5", a continuous                                                                  appropriate fasteners;
   hook strip may be required                                                                  match insulation thickness




                                                                                                                                           U
1a. Draining Edge with Gutter, alternate




                                                
                                                                                                                                                  O N
                                                                                               BITEC cap membrane over
     Seal with modified bitumen,                                                               metal edge flashing.
      or asphalt bleed out at edges
                                                                                               BITEC smooth membrane,
      Metal edge trim with flange                       4"
                                                                                               turned down over edge.
    primed top & bottom and set                                                                Extend min. of 6-8" past
    in modified bitumen sealant.                                                               edge of metal flange
         Nails 3" o.c. staggered.
                    RE: Detail #2



   1" minimum height difference



                                                                                               Base sheet or modified
                                                                                               bitumen base as required.



                                                                                               Roof insulation

                                                                                               Roof deck

                                                                                               Wood blocking, secured with
               Gutter with straps                                                              appropriate fasteners;
                     as required                                                               match insulation thickness


                                                                                 When face dimension exceeds
                                                                                 2.5", a continuous hook
                                                                                 strip may be required



                            CAUTION: This alternate edge detail is not in compliance with FM Loss
                                   Prevention Data Bulletin I-49 for Perimeter Flashings




                                                                33
                          2. Flat Draining Edge (Drip Edge, Gravel Stop)
                              Metal fascia or edge trim,




                                                               ,
                                                               
                                                               
                                                               
                           with or w/o raised lip, primed                                                                                           Modified bitumen or asphalt
                              top & bottom, set in SBS                                                                                              bleed out at both edges
                             modified bitumen flashing                                                                          4"
                               cement or heat softened                                                                               mi
                                                                                                                                          n.
                                        APP membrane.

                             Roof flange, 4" min. width                                                                                        4"
                                                                                                                                                    mi
                                                                                                                                                         n.

                              Modified bitumen sealant                                      1-1/2"                              3"
                                    under metal flange
                                                                                                                    3"
                                                                                     1/2"


                                                                                                                                                    BITEC membrane edge strip
                                                                                                                                                    BITEC field membrane
D E T A I L S




                                      Continuous cleat                                                                                              turned down over edge with
                                                                                                                                                    optional surfacing or coating


                           Wood blocking, secured with
                                appropriate fasteners,                                                                                              Fasteners 3" o.c.,
                            match insulation thickness                                                                                              staggered as shown

                                        Roof insulation                                                                                             Base sheet or modified
                                                                                                                                                    bitumen base as required
                                             Steel deck




                                                   LAP JOINT DETAIL (preferred)                              JOINT COVER DETAIL (alternate)
                                                                4 " min.             (PLAN VIEWS)                               as specified
C O N S T R U C T I O N




                                                                                             4" min.




                                                    sealant
                                              between joints               5 nails                     1/4" min. space,
                                                                                                        fill with sealant                                4 nails




                          2a. Flat Draining Edge (Drip Edge, Gravel Stop), alternate




                                                             ,
                                                            
                          Metal fascia, gravel stop with
                               low raised edge or plain                                                                                         Modified bitumen or asphalt
                           drip edge without raised lip.                                                                                        bleed out at edge
                            Prime flange top & bottom,
                             Roof flange, 4" min. width

                              Modified bitumen sealant                                                  4"
                                    under metal flange
                                                                                     1-1/2"                                 3"

                                                                                                                         6t
                                                                                                                            o




                                                             
                                                            
                                                                                                                                8"
                                                                                  1/2"

                                                                                                                                                BITEC field membrane
                                                                                                                                                over metal edge flashing
                                                                                                                                                BITEC smooth membrane
                                      Continuous cleat                                                                                          turned down over edge


                          Wood blocking, secured with
                               appropriate fasteners,                                                                                           Fasteners 3" o.c.,
                           match insulation thickness                                                                                           staggered as shown

                                        Roof insulation                                                                                         Base sheet or modified
                                                                                                                                                bitumen base as required
                                             Steel deck


                                                                            (See Lap Joint detail - #2)
                                                       CAUTION: This alternate edge detail is not in compliance with FM Loss
                                                             Prevention Data Bulletin I-49 for Perimeter Flashings


                                                                                                 34
3. Raised Roof Edge (with Cant Edge)
                                                                                         i   n.
                                                                                      "m                                                      Fasteners at top of cant
                                                                                1/2                                                           slope, 16" o.c.

                                                                                                                                              BITEC modified bitumen base




                                         ,
                                         
          Cant strip - fastened                                x.                                                                             flashing, up and over cant
             to wood blocking                             ma
                                                     0"                                                                                       and blocking
                                              1   0'
                                                                                                                                              Metal joint covers as req'd.
                 Metal Fascia                                                                                                                 set in elastomeric sealant
      ,
      
      ,        3 -1/2" minimum

             Continuous cleat                                              4"
                                                                                mi
                                                                                     n.
                                                                                                4t
                                                                                                   o   6"                                     Modified bitumen or asphalt
                                                                                                                                              bleed out at edge

                                                                                                                                              BITEC modified bitumen
                                                                                                                                              membrane with optional
                                                                                                                                              surfacing or coating




                                         
   Wood blocking secured with
       
       
  appropriate fasteners, match
          insulation thickness




                                                                                                                                                                                   C O N S T R U C T I O N
                                                                                                                                              Base sheet or modified
                                                                                                                                              bitumen base as required
 Note:
 This detail should be used only                                                                                                              Insulation
 where deck is supported by the
 outside wall.                                                                                                                                Steel deck
 The cant strip placed as shown will
 result in a higher fascia line. Fascia
                                                                                                                                              Note: Secure roof edge metal with
 height can be higher than shown.                                                                                                             fasteners, 16" o.c. and at cover
 Attach nailer to wall or structure.                                                                                                          plates; elastomeric sealant at all
 Refer to Factory Mutual Data sheet 1-49.                                                                                                     plates and fasteners
 Wood blocking may be slotted for venting where required.




4. Low Raised Edge (with Tapered Edge)
Metal fascia, gravel stop with                                                                                                               Modified bitumen or asphalt
low raised edge or plain drip                                                                                                                bleed out at both edges
      edge without raised lip.
Prime flange top and bottom                                                                                             4"
                                                                                                                             mi              Nails 3" o.c., staggered
                                                                                                                                  n.         RE: Detail #2




                                            
                                             ,
                                            
  Metal flange, 4" min. width
                                                                                                                                        4"




                                      
                                      
                                      
                                      
                                                                                                                                             mi
    Modified bitumen sealant                                                                                                                      n.




                                                                                                                                                                                   D E T A I L S
          under metal flange
                                                                      1-1/2"                                             3"
                                                                                                                                                         Bleed out
                                                                                                                 3"

                                                                    1/2"




                                            
                                             
                                             ,
                                            
                                                                                                                                             BITEC flashing membrane

                                                                                                                                             BITEC field membrane
                                                                                                                                             turned down over edge with
                                                                                                                                             optional surfacing or coating
            Continuous cleat
                                                                                                                                             Base sheet or modified
Wood blocking, secured with                                                                                                                  bitumen base as required
appropriate fasteners, match
           thickness of taper
               and insulation
                                                                                                                                             Roof insulation
        Tapered edge strip
           set in asphalt or                                                                                                                 Steel deck
      mechanically attached




                       LAP JOINT DETAIL (preferred)                                                         JOINT COVER DETAIL (alternate)
                                       4" min.                       (PLAN VIEWS)                                        as specified
                                                                                 4" min.




                         sealant
                   between joints                          5 nails                                 1/4" min. space,
                                                                                                    fill with sealant                          4 nails




                                                                                           35
                          4a. Low Raised Edge (with Tapered Edge), alternate
                          Metal fascia, gravel stop with
                          low raised edge or plain drip
                                edge without raised lip.                                                                     Modified bitumen or
                            Prime flange top & bottom,                                                                       asphalt bleed out at edge
                            Metal flange, 4" min. width




                                                               
                                                               
                                                               
                                                               
                                                               
                                                               ,                              .
                                                                                                                   .
                              Modified bitumen sealant                                        4"
                                    under metal flange
                                                                                   1-1/2"                               3"




                                                                                        .
                                                                                        .
                                                                                                                   6t




                                                                    
                                                                     ,
                                                                     
                                                                    
                                                                                                                     o8
                                                                                                                         "
                                                                                 1/2"




                                                                                 .
                                                                                                                             BITEC field membrane
                                      Continuous cleat                                                                       over metal edge flashing
D E T A I L S




                                                                                                                             Modified bitumen or
                                                                                                                             asphalt bleed out at edge
                          Wood blocking, secured with
                                appropriate fasteners,                                                                       BITEC smooth membrane
                                                                                                                             turned down over edge
                          match thickness of insulation
                                     and tapered edge                     .                                                  Fasteners 3" o.c.,
                                                                                                                             staggered as shown
                            Tapered edge strip, set in
                              asphalt or mechaniclally                                                                       Base sheet or modified
                                             fastened                                                                        bitumen base as required
                                        Roof insulation

                                             Steel deck


                                                                             (See Lap Joint detail - #2)
                                                      CAUTION: This alternate edge detail is not in compliance with FM Loss
C O N S T R U C T I O N




                                                            Prevention Data Bulletin I-49 for Perimeter Flashings



                          5. Typical Parapet Wall (for 2-Ply Systems)
                                                                                                                             Joint cover, 4" to 6" wide,
                            Coping - designed to meet                                                                        set in elastomeric sealant
                             FMRC 1-49 requirements




                                                             ,
                                                                                                                             1/2" wide gap
                                , ,
                                 
                            10' max. length each piece                                                                       between pieces
                                
                                
                                ,

                                                                                                                             Fasteners, approx. 24" o.c.
                                                                                                                             at coping
                             Exterior plywood on cleat
                                or tapered blocking to




                                                            
                                                            
                                                            
                                                            ,
                                         provide slope
                                                                                                                             Fasteners approx. 8" o.c.
                                                                                                                             at base flashing
                                   Solid wood blocking
                                                                                                                             BITEC modified bitumen base
                                                                                                                             flashing, up and over wall
                             Exterior siding, brick, etc.                                                                    8" min. height




                                                             ,,
                                                              
                                                              
                                                              
                                                            , 
                                                                                                                             Modified bitumen or asphalt
                                                                                                                             bleed out at edge
                                                                       24"
                                                                       max.
                                                                                                                             BITEC modified bitumen
                                                                                                    4"
                                                                                                         mi                  membrane with optional
                                                                                                              n.
                                                                                                                             surfacing or coating, extend
                            Cant strip, securely nailed                                                                      4" min. above cant
                                      or set in bitumen
                                                                                                                             Fiberglass base sheet, nailed
                          Wood blocking, secured with                                                                        tight to plywood; unattached
                               appropriate fasteners,                                                                        over lower base sheet
                           match insulation thickness

                                                                                                                             Base sheet or modified
                                     Wood framed wall                                                                        bitumen base as required,
                                    construction shown                                                                       extend 2" min. above cant
                          Note:
                          This detail should be used only where the
                          deck is supported by the wall. An expansion joint                                                  Roof Insulation
                          detail should be used for non wall-supported deck.




                                                                                        36
6. Parapet Wall End Termination

                                                                                                       Intermediate flashing skirt
           Parapet coping
         designed to meet
   FMRC 1-49 requirements

                                                                                                       Metal counterflashing

Seal end of metal flashing or
   install metal corner cover                                                                          BITEC modified bitumen base
                                                                                                       flashing with 8" min. height
                                                                                                       above roof surface



                                                                                        n.
                                                                                                       Modified bitumen or asphalt




                                                                                                                                       C O N S T R U C T I O N
                                                                                   mi                  bleed out at edge
    Sheet metal end closure                                                   4"

                                                                                                       BITEC modified bitumen
                                                                                                       flashing edge strip over
                                                                                                       metal edge trim. (Gravel
                                                                                                       stop, fascia, etc.)
                                                                                                       Refer to detail #2

                        Gutter




7. Multi-Ply Base Flashing at Plywood Parapets
    Wall flashing membrane
                                                                                                       Coping - Designed to meet
          Interply membrane                                                                            FMRC 1-49 requirements
     
     
    ,, ,
                                                                                                       Fasteners approx.
   Exterior plywood on cleat                                                                           24" o.c. at coping
    ,, ,,
     
     
    ,

         or tapered blocking




                                                                                                                                       D E T A I L S
            to provide shape
                                                                                                       Fasteners 8" o.c.
         Solid wood blocking

                                                                                                       Sealant
       
      
     

  Fiberglass G2 base sheet,
     nailed tight to plywood,
     

                                                                                                       Termination bar
       fastened 8" o.c. each
   direction and unattached                                                                            Counterflashing
  over the lower base sheet
                                                                                                       BITEC base flashing (8" min.;
   Exterior siding, brick, etc.                                                                        24" max. height), extend 2"
          (wood framed wall                                                                            min. up under wall flashing
         construction shown
                                                                                                       BITEC base flashing interply
                                                                                                       membrane, extend 2" min. up
                                                                                                       under the next membrane

                                                                                                       Fasteners 8" o.c. above the
                                                                                                       base sheet




                                               
                                                
                                                ,
                                               
                                                 24"
                                                 max.                                                  BITEC modified bitumen
                                                                                                       membrane with optional
                                                                                                 in.   surfacing or coating, extend
        

                                                                                             m         4" minimum above cant
                                                                                    4"
                                                          DR Y




         Cant strip, securely
                                                           DR
                                                            Y




     nailed or set in bitumen                                                                          Modified bitumen or asphalt
                                                                                                       bleed out at edge
    Wood blocking, secured
 with appropriate fasteners,                                            DR                             BITEC interply membrane
 match insulation thickness                                               Y
                                                                                                       extend 4" min. above cant
         ,


                                                                                                       Base sheet or modified
              Roof insulation                                                                          bitumen base as required,
                                                                                                       fully adhered, extend 2" min.
                                                                                                       above the cant
 Note: This detail should be used only where the deck is
 supported by the wall. An expansion joint detail should be used
 for non wall-supported deck. Contact BITEC Technical Services for
 suitability of attachment at cants if building movement is not a concern.



                                                                   37
                          7A. High Parapet Base Flashing at Plywood Walls
                                                                                                                                                           Coping


                                                                                   .                 .                                                     Wall flashing membrane


                                                                                                                  . .
                              Exterior plywood on cleat                                                                                                    Fasteners approx.
                                    or tapered blocking                                                                                                    24" o.c. at coping
                                       to provide shape
                                                                                                     .
                                    Solid wood blocking                                                  . .                                               Fasteners 8" o.c.


                             Fiberglass G2 base sheet,
                                nailed tight to plywood,
                                                                                                         . .                                               Sealant

                                  fastened 8" o.c. each
                              direction and unattached
                             over the lower base sheet                                                   . .                                          .    Termination bar
                                                                                                                                .
                                                                                                                                                           Counterflashing
                              Exterior siding, brick, etc.
                                                                                                         .
D E T A I L S




                                      (wood framed wall                                                                                                    BITEC base flashing
                                    construction shown)                                                                                                    membrane, extend 2" min.

                                                       ,, ,,,,,,,                                      ..                                                under wall flash. membrane

                                                                                                                                                           Fasteners 8" o.c. above
                                                                                     24"
                                                                                                                                                           base sheet




                                                                                                 
                                                                                                 ,,
                                                                                                 
                                                                                                 
                                                                                     max.
                                                                                                                                                           BITEC modified bitumen
                                                                                                                                                 n.        membrane with optional
                                                                                                     DR
                                                                                                                                              mi           surfacing or coating,
                                                                                                                                         4"
                                                                                                DR
                                                        , ,,,,
                                    Cant strip, securely
                                nailed or set in bitumen

                           Wood blocking, secured with
                                appropriate fasteners,
                            match insulation thickness
                                                        , 
                                                         
                                                         
                                                          
                                                          
                                                         
                                                         
                                                         , 
                          Note: This detail should be used only where the deck is
                                                                                                 Y
                                                                                                         Y
                                                                                                             .   DR
                                                                                                                      Y
                                                                                                                                                           extend 4" min. above cant

                                                                                                                                                           Modified bitumen or asphalt
                                                                                                                                                           bleed out at edge

                                                                                                                                                           Base sheet or modified
                                                                                                                                                           bitumen base as required,
                                                                                                                                                           extend 2" min. above
C O N S T R U C T I O N




                          supported by the wall. An expansion joint detail should be used                                                                  the cant
                          for non wall-supported deck. Contact BITEC Technical Services
                          for suitability of attachment if building movement is not a concern.




                          7B. High Parapet Base Flashing at Masonry Walls

                                                                                            .                                                             Coping

                                                                                                                                                          Wall flashing membrane
                             Exterior plywood on cleat
                                   or tapered blocking                                                       . .                                          Fasteners approx.
                                      to provide shape                                                        .                                           24" o.c. at coping

                                  Solid wood blocking                                                                                                     Fasteners 8" o.c.


                                                                                                                                                          Sealant


                              Prime masonry surfaces
                                                                                                                                              .           Termination bar
                                                                                                                      .                                   Counterflashing
                            Exterior siding, brick, etc.
                                                                                                                                                          BITEC base flashing membrane,
                                                                                                                                                          extend 2" minimum up under
                                                                                                                                                          wall flashing membrane
                                                                                                     .                                                    Fasteners 8" o.c. above
                                                                                                                                                          base sheet
                                                                               24" max.




                                                                                                
                                                                                                ,,
                                                                                                
                                                                                                
                                   Cant strip, securely                                                                                                   BITEC modified bitumen
                               nailed or set in bitumen                                                                                                   membrane with opt. surfacing
                                                                  


                                                                                                                                    n.                    or coating, extend 4" min.
                              Wood blocking, secured                                                                           mi                         above cant
                                                                                                                          4"
                           with appropriate fasteners,
                           match insulation thickness                                                                                                     Modified bitumen or asphalt
                                                                                                                                                          bleed out at edge

                                                                                                                                                          Base sheet or modified
                                                                                                                                                          bitumen base as required,
                          Note: This detail should be used only where the                                                                                 fully adhered, extend 2" min.
                          deck is supported by the wall. An expansion joint                                                                               above the cant
                          detail should be used for non wall-supported deck.
                          Contact BITEC Tech. Services if building movement is a concern.




                                                                                                     38
7C. Multi-ply Base Flashing at Masonry Parapets
    Wall flashing membrane                                                                  Coping
          Interply membrane
                                                              .                             Fasteners approx.
                                                                                            24" o.c. at coping
   Exterior plywood on cleat
         or tapered blocking                                      .    . .
            to provide shape
                                                                   .                        Fasteners 8" o.c.

         Solid wood blocking                                                                Sealant




                                      
                                       ,
                                      , 
                                      ,
                                                                                            Termination bar
    Prime masonry surfaces                                                                  Counterflashing
                                       
                                       
                                       ,,                                       .         BITEC base flashing membrane,
                                                                         .                  extend 2" up under wall flashing
                                                                                            membrane




                                                                                                                                 C O N S T R U C T I O N
  Exterior siding, brick, etc.
               (masonry wall                                                                BITEC base flashing interply
        construction shown)                                                                 membrane, extend 2" min. up




                                                 ,
                                                
                                                                                            under the next membrane

                                                                  .                         Fasteners 8" o.c. above the
                                                                                            base sheet

                                                      24"                                   BITEC modified bitumen
                                                      max.                                  membrane with optional
                            ,
                            
         Cant strip, securely                                                               surfacing or coating, extend
                                                                                       n.   4" minimum above cant
     nailed or set in bitumen                                                     mi
                                                                             4"
    Wood blocking, secured                                                                  Modified bitumen or asphalt




                                                 
                                                
 with appropriate fasteners,                                                                bleed out at edge
 match insulation thickness
                                                                                            BITEC interply membrane
                                                                                            extend 4" min. above cant
Note: This detail should be used only where                                                 Base sheet or modified
the deck is supported by the wall. An expansion joint                                       bitumen base as required,
detail should be used for non wall-supported deck. Contact                                  fully adhered, extend 2" min.
BITEC Technical Services if building movement is a concern.                                 above the cant




7D. Multi-ply Base Flashing, Stone capped masonry walls




                                                     ,,                                                                          D E T A I L S
      Coping anchor dowels                                                                  Precast stone coping
        seal at penetrations
                with sealant
                                                                                            Fasteners 24" o.c. max.




                                                     ,,
                                               ,,
                                              ,,
                                                                                            Metal thru-wall flashing receiver,
                                                                                            seal at lap joints

                                                                                            Counterflashing insert, fastened




                                                     ,,
                                                                                            into thru-wall flashing receiver




                                 
                                 
                                 
                                  
                                  
                                  
                                 ,
                                                                                            Fasteners 8" o.c.
  Masonry wall construction
                                                                                            BITEC base flashing (8" min.,
     Prime masonry surface                                                                  24" max. height), extend 4"
                                                                                            min. up under counterflashing
                                                                                            BITEC base flashing interply,
                                                                                            extend up under counterflashing
                                                                                            as far as possible, 24" max.
                                                                                            Fasteners 8" o.c., above
                                                                                            the base sheet
                   ,


 Cant strip, securely nailed
           or set in bitumen                                                                BITEC modified bit. membrane
                                                                                            with optional surfacing/coating,
  Wood blocking, fasten to                                                                  extend 4" min. above cant
     deck with appropriate
fasteners, match insulation                                                                 Modified bitumen or asphalt
                 thickness                                                                  bleed out at edge
                    


        Deck support at wall                                                                BITEC interply membrane,
                                                                                            extend 4" min. above cant
                                                                                            Base sheet or modified bitumen
                   Roof Deck                                                                base as required, fully adhered,
                                                                                            extend 2" min. above cant
                                                                                            Roof insulation




                                                                  39
                          7E. Multi-ply Base Flashing at EIFS walls
                                                                                                                   EIFS
                                                                                           x
                                                                                      ma
                                                                                  .c.                              Drip sheet vapor barrier
                                                                             "o                                    behind EIFS
                                                                        16


                                                                                                                   Thru-wall flashing receiver




                                                              ,,
                                                                                                                   Fasteners 24" o.c. max
                                                                                                                   Counterflashing insert, fastened
                                                                                                                   into thru-wall flashing receiver




                                                              ,,
                                                                                                                   2" wide clips @ 16" or 32" o.c.




                                                              ,
                                          Metal studs                                                              studs depending on flash. metal
                                                                                                                   Fasteners at studs




                                                              ,,
                                                                                                                   H.D. Termination bar
                                                                                                                   Intermediate fasteners
D E T A I L S




                          4" wide, 20 ga. sheet metal
                           fastening strip continuous                                                              BITEC base flashing
                                   behind Dens Deck
                                                                                                                   BITEC modified bitumen
                                 1/2" Dens Deck with                                                               membrane w/optional coating
                                      surface primed                                                               or surfacing, extend full height
                                                                24"




                                                              
                                                                max.                                               Modified bitumen or asphalt
                           Cant strip, securely nailed                                                             bleed out at edge
                                     or set in bitumen
                                                                                                                   BITEC base flashing interply
                             Wood blocking, secured                                                                membrane extend up full height
                          with appropriate fasteners,
                          match insulation thickness
                                                                                                                   BITEC interply membrane,
                                                                                                                   extend 4" min. above cant

                                            Roof deck                                                              Base sheet or modified bitumen
                                                                                                                   base as req'd., fully adhered,
                                                                                                                   extend 2" min. above cant
C O N S T R U C T I O N




                                      Roof insulation




                          8. Base Flashing for Wall Supported Deck




                                                                          ,,,
                                                                                                                     Metal thru-wall flashing




                                                                                  
                                                                                  ,,
                                                                                                                     receiver, built into masonry.
                                         Prime masonry                                                               Joints must be lapped and
                                                                                                                     sealed

                                                                                                                     Removable
                                                                                                                     counterflashing insert




                                                                          ,,,
                                                                                                                     Fasteners approximately
                                           Masonry wall                                                              24" o.c. max.
                                            construction
                                                                                                                     Fasteners approx. 8" o.c.

                                             2" minimum                                                              2" wide clip,
                                                                                                                     approx. 3 0" o.c.

                                                                                                                     BITEC modified bitumen
                                                                                                                     base flashing with minimum
                                              ,,
                                              

                             Cant strip, securely nailed                           24"                               8" height above the roof
                                       or set in bitumen                           max.                              surface
                                              ,

                                                                                                                     Modified bitumen or asphalt
                                                                                                                     bleed out at edge
                                                                                                    4"
                               Wood nailer, secured to                                                   mi
                                                                                                              n.     BITEC modified bitumen
                                 deck with appropriate
                             fasteners, approx. 24" o.c.,                                                            field membrane with
                                               

                             match insulation thickness                                                              optional surfacing or coating,
                                                                                                                     extend min. of 4" above cant
                          Note:
                          This detail should be used only where                                                      Base sheet or modified
                          deck is supported by the outside wall.                                                     bitumen base as required,
                                                                                                                     extend 2" minimum
                          Clips at the bottom of the flashing are not                                                above cant
                          necessary on flashings of 6" or less that fit tight
                          against the base flashing.                                                                 Roof insulation

                          See detail #9 for the preferred construction.                                              Deck support at wall




                                                                                               40
                                           
9. Base Flashing for Non Wall Supported Deck

           3" lap with sealant                                                       Metal thru-wall flashing
                                                                                     receiver, built into masonry.
    Flexible vapor retarder to                                                       Joints must be lapped and
       serve as an insulation                                                        sealed
                      retainer
                                                                                     Fasteners approx. 24"
                                                                                     o.c. minimum




                                            
                                            ,
                                                                                     Removable counterflashing,
                                                                                     lap metal at joints


                                                                                     Fasteners approx. 8" o.c.

  Vertical wood curb member,
     fasten to wood blocking,                                                        2" wide clip, approx. 30" o.c
            Bevel top of wood                                                        (see note, detail #8)




                                                                                                                     C O N S T R U C T I O N
                                                                                     BITEC modified bitumen base
     Compressible insulation                                                         flashing with minimum 8"
                           ,                                                        height above roof surface
                                                                                     Cover top edge of flashing




                                            
                                            
         Cant strip to provide                                                       with the vapor retarder
  structural strength; nail top
  and bottom approx. 16" o.c.                      24"                               Modified bitumen or asphalt
                                                   max.                              bleed out at edge
                                                                     4"
      Wood blocking, secured                                              mi
                                                                               n.    BITEC modified bitumen
      to deck with appropriate
                            
                            
   fasteners, match insulation
                     thickness
                                                                                     membrane with optional
                                                                                     surfacing or coating, extend
                                                                                     4" minimum above cant

Note:                                                                                Base sheet or modified
This detail allows wall and deck to move                                             bitumen base as required,
independently, and should be used where there                                        extend 2" min. above cant.
is any possibility that differential movement will occur
between the deck and a vertical surface, such as at                                  Roof insulation
a penthouse wall. The vertical wood member should
be fastened to the deck only. Other methods may be used.




10. Base Flashing for Vented Base Sheet




                                                                                                                     D E T A I L S
            Fasteners approx.                                                       Metal thru-wall flashing
                 24" o.c. max.                                                      receiver, built into masonry.
                                                                                    Joints must be lapped and
                                                                                    sealed

    Fasteners approx. 8" o.c.                                                       Removable
                  (no seal)                                                         counterflashing insert


  Do not seal the base sheet                                                        2" wide clip,
   or membrane plies to wall                                                        approx. 3 0" o.c. (see notes)

                                                                                    BITEC modified bitumen base
                                                                                    flashing, with 8" min. height




                                                          ,,
                                                  24"
   Cant strip, securely nailed                    max.                              above the roof surface
             or set in bitumen
                                                                                    Modified bitumen or asphalt
                                                                                    bleed out at edge

Wood nailer secured to deck                                     4"                  BITEC modified bitumen
 with appropriate fasteners,                                         mi             membrane with optional
                                                                          n.




                                                          ,,
            approx. 24" o.c.,                                                       surfacing or coating,
                                  
                                  ,
                                  

 match insulation thickness                                                         extend 4" min. above cant

                                                                                    Approved fasteners for
  Note:                                                                             type of deck
  This detail should be used over
  wet-fill decks or when reroofing.                                                 BITEC or approved vented
                                                                                    base sheet, extend 2" min.
  Care should be taken not to                                                       above cant
  seal the base sheet to the parapet.
                                                                                    Insulating concrete
  Clips at the bottom of the flashing are not
  necessary on flashings of 6" or less that fit
  tight against the base flashing.                                                  Deck support at wall




                                                           41
                          11. Typical Termination Bar Counterflashing



                                                                         ,,
                                    Smooth concrete,




                                                                          ,
                               exposed surfaces must                                                                    Caulk with elastomeric
                                     be waterproofed                                                                    sealant
                                  Prime concrete with                                                                   Angle, channel or "termination"




                                                                         ,,
                                       asphalt primer                                                                   bar with slotted anchor holes
                                                                                                                        and fasteners in exp. shields

                                                                                                                        Metal counterflashing

                                                                                                                        Compressible elastomeric tape
                             Fasteners approx. 8" o.c.                                                                  to span irregularities

                                                                                                                        Seal top of system with fabric
                                                                                                                        tape and modified bitumen
                                                                                                                        sealant
                               Wood nailer, attach to                                                                   BITEC modified bitumen




                                                                          
                                                                          
                                                                          
                          concrete wall with approved                                                                   base flashing with minimum
D E T A I L S




                          method. Chamfer top to drain                                                                  8" height above the roof
                                           ,
                            Cant strip, securely nailed
                                      or set in bitumen
                                                                       24"                4"
                                                                                                                        surface

                                                                                                                        Modified bitumen or asphalt
                                                                       max.                    mi                       bleed out at edge
                                                                                                    n.
                                                                                                                        BITEC modified bitumen
                                                                                                                        field membrane with
                                            
                                            
                             Wood blocking, fasten to
                               deck with appropriate
                                fasteners. Match the
                                 insulation thickness
                                                                                                                        optional surfacing or coating,
                                                                                                                        extend min. of 4" above cant

                                                                                                                        Base sheet or modified
                                                                                                                        bitumen base as required,
                                                                                                                        extend 2" minimum
                                                                                                                        above cant
                           Note:
                           Where deck is supported by and fastened                                                      Roof insulation
                           to the concrete wall, vertical wood nailers
                           should be secured to the wall with suitable fasteners
C O N S T R U C T I O N




                                                                                                                        Deck support at wall




                          12. Area Divider Curb




                                                 ,,
                          BITEC modified bitumen cap
                             flashing, over top of curb




                                                  
                                                  
                             Vertical grooves (kerfing)                                                                 Metal cap flashing
                               cut for venting, 24" o.c.
                                        where required

                                   Cant strip, securely




                                                   
                                                 ,,
                                                                                                                        Fasteners approx. 24" o.c.
                                    nailed for strength                                                                 at metal cap

                                                                                                                        Fasteners approx. 8" o.c.
                                                                                                                        at base flashing


                                                                                                                        BITEC modified bitumen base
                                                                                                                        flashing, to top of the curb




                                                   
                                                   
                             Wood blocking, securely                                                     4"
                                                                                                              mi        Modified bitumen or asphalt
                                fastened to deck with                                                              n.
                                                                                                                        bleed out at edge
                                appropriate fasteners,
                            match insulation thickness                                                                  BITEC modified bitumen field
                                                                                                                        membrane with optional
                                                                                                                        surfacing or coating.
                                                                                                                        Extend 4" min. above cant
                           Note:                                                                                        Base sheet or modified
                           An area divider is designed simply as a raised double                                        bitumen base as required,
                           wood member attached to a properly fastened wood base                                        extend 2" min. above cant
                           plate that is anchored to the deck.
                                                                                                                        Nail top and bottom
                           Vertical grooves (kerfing) may be saw-cut to facilitate                                      approx. 16" o.c. minimum
                           venting with use of venting base sheets.




                                                                                     42
13. Curb Type Expansion Joint




                   ,,
   Flexible vapor retarder to
 serve as insulation retainer,
        attach to top of curb                                                   Pre-manufactured expansion
                                                                                joint cover with metal flanges
       Chamfer each side of




                   
         wood curb to drain                                                     Fasteners 8" o.c. max

    Compressible insulation                                                     Fasteners approx. 8" o.c.
                                                                                both sides at base flashing



                                                                                Bitec modified bitumen base
                                                                                flashing with 8" min. height.
                                                                                Cover top of flashing with




                    
                    
                                                                                the vapor retarder




                                                                                                                 C O N S T R U C T I O N
                                                                 4"
                                                                      mi
                                                                           n.   Modified bitumen or asphalt
        Nailed wood cant to                                                     bleed out at edge
  provide structural strength
                                                                                BITEC modified bitumen field
    Wood nailer each side                                                       membrane with optional
      secured to deck with                                                      surfacing or coating.
     appropriate fasteners                                                      Extend 4" min. above cant
           approx. 24" o.c.,
 match insulation thickness                                                     Base sheet or modified
                                                                                bitumen base as required,
                                                                                extend 2" min. above cant
 Note:
 Variations of this detail can be used to accommodate
 several situations. Joints, corners, cross-overs and end                       Nail top and bottom
 terminations are of particular importance.                                     approx. 16" o.c. minimum




14. Low Profile Raised Expansion Joint




                 ,
                 ,,,
                   
                                                                                                               D E T A I L S
   Flexible vapor retarder
    membrane to serve as




                 
                 
                 , ,
 retainer for compressible




                 
                 ,,
insulation, attach to top of                                                       Cap sheet membrane,
               wood nailers                                                        Top ply



                                                                                   Flexible tube

                                                                                   Smooth cap sheet,
                                                                                   Bottom ply




                    ,,
                    
                     
                                                                                       Cap sheet
                                                                                       membrane
        Tapered edge strip                                                             Modified bitumen
                                                                                       or asphalt bleed
            Roof insulation                                                            out at both edges




                     
                    
                 Steel deck                                                            Base sheet

                 Steel joist


   Compressible insulation




                                                            43
                                         ,,
                                         ,,
                          14A. Low Profile Prefab Raised Expansion Joint




                                             P
                                             @
                                   Flexible vapor retarder               Using Prefabricated Expansion Joint Cover




                                           AB
                                           
                                           QR
                                           B
                                           ,
                                           P
                                           R
                                           
                                           @
                                    membrane to serve as                                                                     Prefabricated
                                 retainer for compressible                                                                   Roof expansion joint with
                                       insulation, attach to                                                                 metal flanges




                                         A 
                                          ,
                                         Q @
                                       top of wood nailers.




                                         @ B
                                         A P
                                          A R
                                         ,,
                                           Bleed out at edge




                                           S
                                           C
                                           P
                                           Q
                                           B Q
                                           R
                                                                                       .
                                                                                 min                                         Sealant
                                         Tapered edge strip                 6"




                                         S 
                                          ,
                                         C 
                                                                                                                             Cap sheet membrane

                                                                                                              .              stripping ply




                                                Q
                                                @
                                                B
                                                S
                                                R
                                                
                                                P
                                                C
                                                A
                                                 ,,
                                                                                                                                            Primed metal flange,
                                                                                                                       .                    fastened 3" o.c.




                                                
                                               A
                                               CB
                                               QC
                                               SR
                                               
                                                                                                                                            staggered - set in
                                                                                                                                            sealant
D E T A I L S




                                               S
                                             Roof insulation
                                                                                                                                      in.
                                                                                                                                  m
                                                                                                                             6"
                                                 Steel deck

                                                                                                                                              Modified bitumen
                                                  Steel joist                                                                                 or asphalt bleed
                                                                                                                                              out at both edges

                                     Compressible insulation
                                                                                                                                             Cap sheet membrane

                                                                                                                                             Base sheet
C O N S T R U C T I O N




                          15. Thru-Wall Scupper
                                One piece sheet metal
                              Scupper Tube Configuration        Prime flange, top & bosttom,
                                                                set in mastic or sealant and
                                                   .            securely fasten flange

                                              . .
                                                                to wood blocking
                                                                                                                              Coping
                                            .




                                          
                                          
                                          
                                          ,,
                                                     . .
                          Drip lip
                                                ..                                                                            Fasteners approx. 24" o.c.
                                                                                                                              at coping


                                                                                                                              Fasteners 8" o.c.
                                                                                                                              at base flashing




                                          
                                         , ,
                                 Treated wood blocking,
                                     sloped as required                                           .                    . .




                                              ,,
                                                                                                                  .           Scupper assembly, set in




                                           ,
                                           
                                                                                                                       .      mastic or sealant on top
                                                                                                                              of base ply

                                                                                                  .               .           Scupper flange, covered




                                           , ,
                                                                                                      .                       Bitec modified bitumen
                                               ,

                              Exterior siding, brick, etc.                                                                    base flashing, up and
                                                                                             .




                                           
                                          ,, ,
                                                                                                                              over the wall




                                           ,,
                                           Scupper flange
                                                                                                                              Modified bitumen or asphalt
                                                                                                                              bleed out at edge and




                                             
                                             
                                                
                                                

                            Cant strip, securely nailed                                                                       at scupper tube opening
                                      or set in bitumen
                                                                                                          .                   Bitec modified bitumen




                                                
                                           Wood blocking,                                                                     membrane, with optional
                                           securely nailed                                                                    surfacing or coating, extend
                                                                                                                              up over scupper flange




                                             
                                                 


                                             Wood framed
                                          wall construction                                                                   Fiberglass base sheet,
                                                                                                                              nailed tight to plywood,
                                                                                                                              unattached over lower
                                                                                                                              base sheet
                          NOTE: This detail should be used                                                                    Base sheet or modified
                          only where the deck is supported                                                                    bitumen base as required,
                          by the wall. An expansion joint                                                                     extend 2" above cant
                          detail should be used for                                        Roof insulation
                          non-wall supported deck.
                                                                                                      Deck



                                                                                                                  44
16. Scupper Through Raised Roof Edge




                                                       
                                                       ,
                                                       
                                                       
       Prime flange top and
     bottom before stripping,
     form scupper pan to fit
             wood blocking                                                                Fasten scupper flanges
               configuration                                                              to wood blocking


       Turn edge ply down
    OVER BLOCKING INTO
      CONDUCTOR HEAD                                                                                     Rounded
                                                                                                         corners

                                                                                                Modified bitumen
                                                                                                or asphalt bleed out
                                                                                                at edges
             Conductor head




                                                                                                                         C O N S T R U C T I O N
                                                                                          BITEC modified bitumen
                                                                                          flashing sheet

Notes:
                                                                                          BITEC modified bitumen field
This detail should be used only                                                           membrane with optional
where the deck is supported by                                                            surfacing or coating
the outside wall.

This detail can be adapted to                                                             Base sheet or modified
other roof edge conditions and                                                            bitumen base as required
can be installed after building
is completed

This detail is used to relieve
standing water in areas along the
roof edge. All roof surfaces should be sloped to drain.               Cut-away view thru-scupper
Attach nailer to wall. Refer to Factory Mutual data sheet
1-49. Wood blocking may be slotted for venting where required.




17. Roof Drain without Lead Flashing




 
 
 ,
 ,,                                                                                                                    D E T A I L S
  Rounded corners
                                                                                         Strainer

                                                                                         Clamping ring

                                                                                         Modified bitumen target
                                                                                         flashing with optional
                                                                                         surfacing or coating

                                                                                         Modified bitumen or asphalt
                                                                                         bleed out at edges




                                                                                         BITEC modified bitumen field




   
   
                                                                                         membrane with optional
                                                                                         surfacing or coating

   Taper insulation
       24" to drain



         Deck clamp

Notes:

1. Stop base sheet at edge of roof drain flange

2. Install 40" x 40" (nominal) modified bitumen
   collar into drain and seal to roof drain flange                                       40" x 40" smooth surface
                                                                                         modified bitumen collar,
3. Install roof membrane over collar into drain                                          sealed to roof drain flange

4. Install 36" x 36" min. size target flashing strip                                     Base sheet or modified
   over roof membrane.                                                                   bitumen base as required




                                                                 45
                          18. Roof Drain with Lead Flashing




                            
                            ,
                            
                            ,,
                                 Rounded corners
                                                                                            Strainer

                                                                                            Clamping ring

                                                                                            Modified bitumen target
                                                                                            flashing with optional
                                                                                            surfacing or coating

                                                                                            Modified bitumen or asphalt
                                                                                            bleed out at edges

                                                                                            Lead flashing, primed top
                                                                                            and bottom

                                                                                            BITEC modified bitumen field
                                                                                            membrane with optional
                          Lead flashing, primed




                              
                              
                                                                                            surfacing or coating
                                 top and bottom
D E T A I L S




                               Taper insulation
                                   24" to drain

                                     Deck clamp



                            Notes:

                            Min. 30" sq., 2-1/2 to 4 lb. lead flashing
                            Set on modified bitumen membrane in modified
                            bitumen sealant. Prime top surface before stripping.
                                                                                            40" x 40" smooth surface
                            Membrane plies and metal flashing                               modified bitumen collar,
                            extend under clamping ring. Stripping membrane                  sealed to roof drain flange
                            extends 4" beyond edge of flashing sheet, but not beyond
C O N S T R U C T I O N




                            the edge of sump.                                               Base sheet or modified
                                                                                            bitumen base as required




                          19. Sheet Metal Pan Roof Drain




                            
                            ,
                            
                            ,,
                                                       Install wire-type
                                                       strainers



                                                                                            BITEC modified bitumen field
                                                                                            membrane with optional
                                                                                            surfacing or coating




                             
                            
                                                                                            Roof drain flange, soldered
                                                                                            to drain pipe. Prime metal
                                  Fasten                                                    flange, top and bottom,
                             metal flange                                                   allow to dry before
                                 to wood                                                    installation. Set in BITEC
                                blocking                                                    Compaflash stick bitumen or
                                   3" o.c.                                                  approved modified bitumen
                                                                                            sealant and fasten
                                                                                            to wood blocking
                                                Insulation

                                Wood blocking fastened
                                        to deck, match
                                   insulation thickness
                                                                                            BITEC smooth surface
                                                                                            modified bitumen collar
                                                                                            membrane, extend 6" min.
                                Seal edge of membrane                                       beyond edge of metal flange
                                    to drain with BITEC
                                       Compaflash stick
                                                                                            Base sheet or modified
                                                                                            bitumen base as required




                                                                                       46
20. Skylight, Hatch and Smoke Vent Curbs

                                                                 Extruded aluminum frame
                                                                 with weep holes



                                                                 Metal counterflashing
                                                                 to accommodate specific
     Double dome skylight                                        curb situation, with




                        ,,
                  shown                                          fasteners 8" o.c.


                                                                 Skylight anchors as specified



                                                                 Fasteners approx. 8" o.c.
                                                                 at base flashing




                                                                                                     C O N S T R U C T I O N
   Wood curb, 2"x10" min.


              
              ,,
   (factory curbs optional)
                                ,,
                                
                                
                        
                        
                          ,,
                                                                 Modified bitumen base
                                                                 flashing with 8" minimin
                                                                 height above roof surface

                                       4"                        Modified bitumen or asphalt
                                            mi
                                                 n.              bleed out at edge
                Cant strip,
   set in bitumen or nailed                                      BITEC modified bitumen
                                                                 membrane with optional
              
                                 
                                                                 coating or surfacing. Extend
                                                                 4" min. above cant

 Wood blocking secured to                                        Base sheet or modified
    deck with appropriate                                        bitumen base as required,
         fasteners, match                                        extend 2" min. above cant
  the insulation thickness
                                                                 Roof insulation




21. Roof Top Air Handling Units




                      ,,                                                                             D E T A I L S
Metal frame, 16 gauge min.
                                                                     Seal strip or sealant




                       
                        
                       ,,
             2" wood nailer
                                                                     Counterflashing fastened
             Curb insulation                                         approx. 18" o.c. with a




                      
                      
                                                                     minimum of 3 per side

                                                                     BITEC modified bitumen base
  ,
   
   
  

                                                                     flashing with 8" min. height
                                                                     above roof surface

                                                                                  Rounded




                          
                          
                          
                                ,,
                                
                                


                                                                                  corners
  
  
 ,

                                                      4"                         Modified bitumen
                                                           mi
                                                                n.               or asphalt bleed
   Cant strip set in bitumen                                                     out at edges
                    or nailed
 
 
,

                                                                     Fasteners approx. 8" o.c.
             Wood blocking                                           with a minimum of
          fastened to deck,                                          2 each side
 match insulation thickness
                                  
                                  



                                                                     BITEC modified bitumen field
                                                                     membrane with optional
                                                                     coating or surfacing. 8" min.
   Alternate frame support                                           height above roof surface.
           for heavy units.
                                                                     Base sheet or modified
                                                                     bitumen base as required,
                                                                     extend 2" min. above cant

                                                                     Roof insulation




                                  47
                          22. Insulated Steel Deck Frame Support

                                                                   Caulk with elastomeric
                                                                   sealant
                                     Structural frame
                                                                   Draw band




                                             ,
                                              
                                              
                                             
                           Nail flange to wood nailer,
                            flange set in sealant over
                            roofing - prime flange top
                          and bottom before stripping              Watertight umbrella
                                                                   (Rain collar or storm collar)

                                                                   Modified bitumen target
                                                                   flashing over the field
                                                                   membrane

                                                                   Modified bitumen or asphalt




                                                         
                                                         
                                                         
                                                         ,,
D E T A I L S




                                      Roof insulation              bleed out at edges

                                           Steel deck              Roof Jack, 8" min. height
                                                                   with 4" min. flange
                               Wood blocking, secure
                             to deck with appropriate              Rounded corners
                                    fasteners, match
                                 insulation thickness              BITEC modified bitumen
                                                                   membrane with optional
                             Compressible insulation               surfacing or coating


                                                                   Modified bitumen collar
                                                                   flashing under metal flange,
                                 Welded anchor plate               extend 6" min. beyond
                                                                   edge of flange

                                                                   Base sheet or modified
                                                                   bitumen base as required
C O N S T R U C T I O N




                          23. Concrete Deck Frame Support




                                             ,
                                                                   Caulk with elastomeric
                                                                   sealant
                                     Structural frame
                                                                   Draw band

                           Nail flange to wood nailer,
                            flange set in sealant over




                                             ,,,,
                                             
                                             
                                             
                                              ,,
                            roofing - prime flange top




                                                
                          and bottom before stripping              Watertight umbrella
                                                                   (Rain collar or storm collar)

                                                                   Modified bitumen target
                                                                   flashing over the field
                                                                   membrane

                                                                   Modified bitumen or asphalt
                                      Roof insulation              bleed out at edges




                                             
                                             
                                             ,,,,
                                             
                                       Concrete deck               Roof Jack, 8" min. height




                                                
                                                
                                                ,,
                                                
                                                                   with 4" min. flange
                               Wood blocking, secure
                             to deck with appropriate              Rounded corners
                                    fasteners, match
                                 insulation thickness              BITEC modified bitumen
                                                                   membrane with optional
                             Compressible insulation               surfacing or coating


                                                                   Modified bitumen collar
                                                                   flashing under metal flange,
                                 Welded anchor plate               extend 6" min. beyond
                                                                   edge of flange

                                                                   Base sheet or modified
                                                                   bitumen base as required




                                                         48
24. Pipe Support with Roller Assembly




          
          ,,
           This detail allows for expansion and contraction of pipes without damage to the roof.




           
          ,,
           ,
           ,,
           
          
                                                                                    Adjusts vertically
                                                                                    and horizontally




                                                                                                                  C O N S T R U C T I O N
           
           
Note:
Both BITEC and NRCA reaffirm opposition to pipes                                    Set bolts
and conduits being placed on roofs. However, where                                  in elastomeric sealant
they are necessary, this type of roller support
is recommended




              
            ,
25. Equipment or Sign Support Rail




          
          ,,,
            
            
                                                                                   Equipment frame or leg




                                                                                                                  D E T A I L S
                                                                                   Set bolts in




                      ,
                      ,
                                                                                   elastomeric sealant
 14" minimum space to the
      bottom of equipment                                                          Metal cap flashing with




                      ,
                                                                                   receiver for insert




                     
                     
                     ,,
                      
 Fasteners approx. 8" o.c.                                                         Neoprene pad
         at base flashing
                                                                                   Fasteners approx. 24" o.c.




                       
Cant strip, securely nailed
          or set in bitumen                                                        Removable
                                                                                   counterflashing insert
                                      

           Roof insulation                                                         BITEC modified bitumen base




                                                             ,,
                                                             
                                                             
                                                             
                                                                                   flashing, up and over curb
                                       
                                       ,
                                       


 Wood blocking, securely
     fastened to deck with                                          4"             Modified bitumen or asphalt
                                                                         mi
    appropriate fasteners,                                                    n.   bleed out at edges
match insulation thickness
                                                                                   BITEC modified bitumen field
                                                                                   membrane with optional
Note:                                                                              surfacing or coating.
This detail allows for roof maintenance                                            Extend 4" min. above cant
around the equipment or sign. The continuous
support is preferred in lightweight roof systems
because the equipment weight can be spread over
more supporting members where heavy structural systems                             Base sheet or modified
are used or where the load can be concentrated over a column.                      bitumen base as required,
Clearance must be provided for removal and replacement of roofing                  extend 2" min. above cant
and flashing between parallel supports.




                                                               49
                          26. Pipe and Flashing Clearances




                                                                              
                                                                              ,,                                 ,
                                   2" nominal
D E T A I L S




                                                                              
                                                                              
                                                                              ,,
                                                                              
                                                  12" min.


                                                       12" min.
                                                                                                                       12" min.
                                                                                                            4" min.
                                                             12" min.
C O N S T R U C T I O N




                          27. Mechanical Equipment Stand


                                                                                                                 Structural frame




                             See details                                                                         Pipe column height -
                            #22 and #23                                                                          see table




                                                                                                                 Width - see table
                             Width of Equipment         Height of Legs
                                    up to 24"                     14"
                                    25 to 36"                     18"
                                                                          Note:
                                    37 to 48"                     24"     This detail is preferable when the concentrated
                                                                          load can be located directly over columns or heavy
                                    49 to 60"                     30"     girders in the structure of the building. This detail
                                                                          can be adapted for other uses, such as sign supports.
                                 61" and wider                    48"




                                                                         50
28. Plumbing Vent Flashing




 
 ,
                                                       Modified bitumen seal
  Roll lead flashing 1" down                           around all pipe penetrations
                into the pipe

                                                       Set lead flange in modified
                                                       bitumen sealant. Prime the
                                                       flange top and bottom before
                                                       stripping. 4" min. flange
                                                       width




  
  ,,
                                                       Modified bitumen or asphalt
                                                       bleed out at edges


                                                       Modified bitumen target
                                                       flashing over the field
                                                       membrane joints




                                                                                      C O N S T R U C T I O N
    
    
    
    ,,
                                                  4"

               Roof insulation                         Rounded corners

         Plumbing vent stack

                                                       BITEC modified bitumen field
                                                       membrane with optional
      Treated wood blocking                            surfacing or coating

                                                       BITEC smooth surface
                                                       modified bitumen collar
   Modified bitumen sealant                            membrane, extend 6" min.
                                                       beyond edge of metal flange

Note:                                                  Base sheet or modified
Sheet lead minimum of 2-1/2 lbs. per foot.             bitumen base as required




29. Approved One-Way Roof Vent




 ,
                                                                                    D E T A I L S
                                                       Spun aluminum
                                                       one-way pressure release
                                                       vent





 ,
  ,,

                                                       Target flashing
                                                       over field joints




,,,,,
                                                       Modified bitumen seal

                                                       Modified bitumen or asphalt
                                                       bleed out at edges

                                                       Compaflash stick bitumen or
                                                       modified bitumen sealant
                                                       (Do not use mastics with




,,,,,
    ,,
    
                                                       APP modified torch
                                                       applied membranes)


                                                       Rounded corners


                                                       BITEC modified bitumen field




,,,,,
                                                       membrane with optional
                                                       surfacing or coating
          Vent flange set in
   modified bitumen sealant                            BITEC smooth surface
  or asphalt - prime top and                           modified bitumen collar
  bottom before installation                           membrane, extend 6" min.
                                                       beyond the vent flange
             Loose insulation




,,,,,
                                                       Base sheet or modified
                                                       bitumen base as required
                    Roof Deck


                     Insulation




                                             51
                          30. Hot Stack Flashing Curb




                                               ,
                                                                                                                                      High temperature
                                                                                                                                      Elastomeric sealant
                                                                                                                                      if not welded
                                          Wood curb,
                                    10" nominal height                                                                                Draw band or weld the
                                                                                                                                      umbrella to stack




                                                
                                                
                                                
                                                                                      ,
                             Cant strip, set in bitumen




                                                
                                                                                                                                      Metal umbrella
                                               or nailed                                                                              (Rain collar or storm collar)

                                                                                                                                      Seal top of flashing with




                                                                                      ,
                                                                                                                                      fabric tape and sealant

                                     Roof                                                                                             Counterflashing fastened
                                insulation                                                                                            approx. 12" o.c. with a




                                                                                      ,
                                                                                                                                      minimum of 3 per side

                                                                                                                                      Removable counterflashing




                                                     
                                                     ,,
                                                     
                                                  ,
D E T A I L S




                                                                                      ,
                                                                                                                                      Fasteners approx. 8" o.c.

                                                                                                                                      Modified bitumen or asphalt
                            Wood blocking, secured to                                                                                 bleed out at edges
                               deck with appropriate




                                                                                      ,
                                 fasteners, match the
                                  insulation thickness
                                                                                                                    4"
                                                                                                                           m
                                                                                                                                in.   Rounded corners

                                                                                                                                      BITEC modified bitumen base
                          Metal sleeve where required                                                                                 flashing with 8" min. height
                          (Insulate void for cold pipes)                                                                              above roof surface

                                                                                                                                      BITEC modified bitumen field
                                                                                                                                      membrane with optional
                            Note                                                                                                      surfacing or coating. Extend
                            This detail allows the opening to be                                                                      4" min. above cant
                            completed before the stack is placed. The
                            metal sleeve and the clearance necessary will                                                             Base sheet or modified
                            depend on the temperature of the material handled                                                         bitumen base as required,
C O N S T R U C T I O N




                            by the stack.                                                                                             extend 2" min. above cant




                          31. Piping Through Roof Deck




                                               ,,
                                                                                                                                      Custom-fitted
                                                                                                                                      sheet metal hood




                                               
                                                                                                                                      Custom-fitted sheet metal
                               Insulate inside of metal                                                                               or flex-tube collar
                                  work in cold climate
                                                                                                                                      Slope pipes down away from
                                                                                                                                      hood when possible.




                                               
                             Cant strip, set in bitumen                                                                               (See insert for drip ring)
                                               or nailed
                                                                                                                                      BITEC modified bitumen base
                                                                                                                                      flashing with 8" min. height
                                       Roof                                                                                           above roof surface
                                  insulation
                                                                                                                                      Fasteners approx. 12" o.c.
                                                                                                                                      with min. 2 per side
                                                        ,


                                                  
                                                  ,
                                                                                                                                      Fasteners approx. 8" o.c.
                                                                                                                                      at base flashing
                             Wood blocking, secure to
                               deck with appropriate                                                                                  Rounded corners
                                    fasteners, match
                                 insulation thickness                                                                     in.         Modified bitumen or asphalt
                                                                                                                      m
                                                                                                                 4"                   bleed out at edges
                                                         
                                                         
                                                         

                                             DRIP RING DETAIL                                                                         BITEC modified bitumen
                                                                Metal                                                                 field membrane with optional
                                                                drip ring
                                                                                                                                      surfacing or coating.
                                                                                                                                      Extend 4" min. above cant

                                                                                                                                      Base sheet or modified
                                                                            Note:                                                     bitumen base as required,
                                                                            This detail shows another                                 extend 2" min. above cant
                                                                  Sealant
                                                                            method of eliminating pitch pockets
                                                       Solder or sealant    and a satisfactory method of grouping
                                                                            piping that must come above the roof surface




                                                                                              52
32. Typical Pitch Pan

           Urethane sealant

                  Draw band




                                          ,,
            Metal rain collar
                                                                                      Clean and prime pipe through
                                                                                      pitch pan, inside pitch pan,





  

                                                                                      and top and bottom of flange




                                          ,,
                                                    
                                                    ,
                                         2" min.                                                       Modified bitumen target




                                          ,,
 
, ,,
 
                                      clear                                                        flashing over modified
                                                                                                       bitumen field membrane




, Sheet metal pitch pan of




                                         ,,,,
                                          ,,
                                                                                                               Modified bitumen or




                                                                                                                                                C O N S T R U C T I O N
   min. 24 gauge galvanized                                                       Sloped top layer             asphalt bleed out at edge
              16 oz. copper;                                                      of pourable sealer
   or other approved metals                4"                                                                      Field membrane

                                                                                 Pourable sealer over
                                                                                  non-drip filler at bottom           Base sheet

,
  
  
  
  











33. Split Repair
                     Insulation

                                  Deck
                                                                                                                   Smooth modified
                                                                                                                   bitumen flashing
                                                                                                                   collar




,,,, ,,,,
                                                                                                               Inverted cap sheet




                                                                                                                                                D E T A I L S
                                                                                                               over split, extend 2" over
                                                                                                               each side of split

             Clean and prime
     area on each side of split                                                                                Cap sheet




   ,,,,
,,,, ,,,,
            ,
            ,
            ,

                                                        8"min.
             ,
             ,
             ,
                                                            2"                        8"min.




   ,,,,
                                                                 2"




      ,,,,
      Roof Insulation or Deck


                                           Roof Split




   Clean area to be repaired of any coatings or loosed surfacing
 granules; spud any gravel to a clean, smooth surface. Prime area
                                                                                                               Roof Insulation or Deck

                                                                                                               Existing Roof Membrane


                                                                         Using material compatible with the existing roof, cut a strip of SPM
                                                                       series, APM-4T or APM-4.5T cap sheet to extend 8" min. each
 to be repaired and allow to dry thoroughly. Cut a strip of SPM        side of the DRY piece. Adhere in hot asphalt or torch into place as
 series, APM-4T or APM-4.5T cap sheet to extend 2" each side of        required for material being used.
 split. Lay the piece dry, granule side down, over the split. (The       APP or SBS cap sheets may be used over asphalt built up roofs.
 use of lightweight cap sheets is not recommended.)




                                                                      53
                      R O O F A S S E M B LY G E N E R A L R E Q U I R E M E N T S
                  1) Systems warranteed for 15 or 20               ply; with or without insulation.              ings is 24". Any flashings above
                     years require complete removal of         5) Recover insulation is required over            that height are considered “wall
                     all existing roofing and insulation, if      all previously graveled roofs or sin-          coverings” and are not covered by
                     not new construction.                        gle ply roofs when pre-approved.               warranty.
                  2) NDL & Full System warranties              6) Mechanically fastened base sheets         11) Always refer to most recent UL, FM
                     require pre-approval, and complete           over existing smooth surface roofs            or other code agency listings or
                     removal of all existing roofing and          (non-graveled) will be allowed only           approvals for specific requirements
                     insulation if not new construction.          when pre-approved by BITEC’s                  which are not listed in this manual.
                  3) Twelve (12) year warranteed sys-             Technical Service Department.                 Assemblies shown on the follow-
                     tems over wood decks will require                                                          ing pages are for BITEC warranty
                                                               7) One-way deck vents are required
                     one or more of the following:                with all recover systems, concrete            compliance, not necessarily for
                         a. Minimum 3⁄4" tongue and               decks, gypsum decks and decks                 code agency compliance. All
                            groove plywood decking.               using all types of lightweight insu-          requirements are subject to change
                                                                  lating fills.                                 without notice.
                         b. A 1⁄2" minimum layer of roof
                            insulation, 1⁄2" gypsum            8) Roof insulation may not be installed      12) Direct application of any BITEC
                            board or 1⁄4" Dens-Deck as            in direct contact with any lightweight        product over an existing mem-
                            a separation layer.                   concrete or gypsum decks. A vapor             brane without a base sheet and/or
                                                                                                                recover layer of insulation is not
A S S E M B L Y




                         c. Minimum slope of 1⁄4" per             retarder must first be mechanically
                                                                  fastened to the deck, with any insu-          acceptable.
                            foot.
                                                                  lation adhered to the vapor retarder      13) Cold applied systems require
                  4) Twelve (12) year warranteed SBS              in hot asphalt.                               1
                                                                                                                 ⁄4" :12 minimum slope for warranty.
                     systems with mechanically fas-
                     tened base sheets will require one        9) Metal base flashings are not              14) Maximum warranty for cold
                     additional mopped ply of UL Type             acceptable.                                   applied adhesive systems is 10
                     IV fiberglass ply sheet as an inter-      10) Maximum height for base flash-               years.



                                          L AY I N G PAT T E R N S D I A G R A M S
                        The following Laying Pattern                Cold adhesive may not be used          for the roof insulation board for war-
R O O F




                     Diagrams only show some typical            for multi-ply systems requiring more       ranty purposes. Pre-approval will be
                     assemblies. Modifications may be           than two plies and consequently ten        required. Under no circumstances
                     made to any of them to accommo-            (10) years is the maximum warranty         will BITEC allow direct attachment
                     date many other situations. (See           period for these systems. Cold adhe-       by torching or mopping to the bar-
                     BUR-MOD section, pgs. 59-68)               sives may not be used with any APP         rier board materials. All membranes
                                                                membrane or SBS systems de-                must be mechanically fastened over
                         There are numerous combina-
                                                                signed for torch application. Plastic      these materials.
                     tions possible when considering the
                                                                cement must not be used with any
                     available deck types, insulation and                                                      Refer to individual insulation
                                                                BITEC modified bitumen product.
                     membrane combinations. Interplies                                                     manufacturer’s FM Approvals and/or
                     may be added to two ply systems               Vapor retarder systems are not          UL Listings for proper attachment to
                     shown without adversely affecting          shown on any of these diagrams             various decks. Fastening pattern
                     the UL classification for that assem-      because BITEC neither designs or           requirements vary considerably for
                     bly. For systems to be warranteed,         warranties vapor retarder systems.         different types of insulation and thick-
                     BITEC may or may not allow hybrid          Several conditions requiring vapor         nesses, and may change without
                     or modified systems allowed by other       retarders are not warrantable by           notice.
                     manufacturers.                             BITEC, such as swimming pools,
                                                                                                              Warranty requests must be sub-
                                                                freezer and cold storage buildings,
                        Pre-approval is required from                                                      mitted for pre-approval before instal-
                                                                and buildings with interior high
                     BITEC’s Manager of Technical                                                          lation of the membrane begins.
                                                                humidity conditions.
                     Services for any extended warranty                                                    Without prior approval, warranties
                     (over 12 years) or for any systems or          In some instances, a barrier           may be denied.
                     assemblies considered unusual or           board of minimum 5⁄8" gypsum board
                     questionable by BITEC.                     or 1⁄4" Dens-Deck may be substituted




                                                                                  54
    1. Typical Three-Ply System Over Insulation



                      ,,,,,, ,,,,,,
                      ,,,,,, ,,,,,,
                      ,,,,,, ,,,,,,
                      ,,,,,, ,,,,,,
                      ,,,,,, ,,,,,,
For 15 and 20 year systems
–––––––––––––––––––––––––––––
1. Approved Roof Insulation attached
per specifications, over suitable sub-
strate; required for 15 or 20 year
systems.
                                               1
                                            Insulation
2. UL Type G2 Fiberglass Base Sheet
installed as per specification in hot
asphalt.
                                                                        2
                                                               G2 Fiberglass
3. BITEC Smooth APP or SBS Interply                             Base Sheet
Sheet applied according to specifica-
tion for particular system application.                                                     3
                                                                                         BITEC
4. BITEC APP or SBS Cap Sheet                                                          Interply or
                                                                                        Smooth
applied according to specification for
the particular cap sheet application.
                                                                                       Cap Sheet
                                                                                                                 4
                                                                                                             BITEC
5. Approved Roof Coating required on                                                                       Cap Sheet




                                                                                                                                    R O O F
APS-4T. Roof coating may be required
on mineral surfaced membranes for UL                                                Mopping
                                                                                    asphalt
and FM compliance. Gravel surfacing is
required for warranty on SPS-3H mem-
brane. A warranty fee is required for all
                                                         Mopping
                                                         asphalt
                                                                                    or heat welded     Mopping
                                                                                                       asphalt
                                                                                                       or heat
                                                                                                                         5
                                                                                                                       Optional
                                                                                                       welded
15 & 20 year systems.                                                                                                  Coating
                                                                                                                     or surfacing




                                                                                                                                    A S S E M B L Y
    2. 3-Ply System, Mech. Attached Base Sheet & Insulation
For 15 or 20- year Systems.
–––––––––––––––––––––––––––––
1. Approved Insulation attached per
specifications, over suitable substrate
for 15 or 20 year systems.                     1
                                            Insulation
2. UL Type G2 Base Sheet fastened
through insulation to deck with appro-
priate fasteners and plates, 12" o.c. at
base sheet laps and one row 12" o.c.
                                                                             2
                                                                    G2 Fiberglass
along center of sheet.                                               Base Sheet

3. Bitec Smooth APP or SBS Interply
Sheet applied according to specifica-
                                                                                             3
                                                                                           BITEC
tion for particular cap sheet application                                                Interply or
                                                                                          Smooth
4. Bitec APP or SBS Cap Sheet applied
according to specification for particular
                                                                      12 "
                                                                                         Cap Sheet
                                                                                                                  4
                                                                                                              BITEC
cap sheet application.                                                                                      Cap Sheet
5. Approved Roof Coating required on                         12 "
                                                                                     Mopping
APS-4T. Roof coating may be required                                                 asphalt
                                                           Mopping
on mineral surfaced membranes for UL
and FM compliance. Gravel surfacing is
                                                           asphalt
                                                                                     or heat welded     Mopping
                                                                                                        asphalt
                                                                                                        or heat
                                                                                                                           5
                                                                                                                        Optional
required for warranty on SPS-3H mem-                                                                    welded
                                                                                                                        Coating
brane. A warranty fee is required for all
15 & 20 year systems.



                                                              55
                      3. Mechanically Attached Base Sheet & Insulation




                                          ,,,,,,
                                          ,,,,,,
                                          ,,,,,,
                                          ,,,,,,
                                          ,,,,,,
                  12 yr. max. warranty as shown for APP
                  systems. 10 yr. max. warranty as
                  shown for SBS; For 12 yr. warranty                                                                       Mopping asphalt
                                                                                                                           or heat welded
                  w/SBS systems, an add’l interply (not
                  shown) of Type IV ply sheet is req’d.
                  –––––––––––––––––––––––––––––
                                                                  1
                                                               Insulation
                  1. Approved Roof Insulation over suit-
                  able substrate, pre-secured per FMRC
                  requirements.
                  2. UL Type G2 Fiberglass Base Sheet
                                                                                                       2
                                                                                               G2 Fiberglass
                  fastened through insulation to deck           Pre-securement                  Base Sheet
                  with appropriate fasteners and plates,        fasteners
                  12" o.c. at base sheet laps and one row
                  12" o.c., down center of sheet.
                  3. BITEC APP or SBS Cap Sheet
                  applied according to specification for
                                                                                                                      3
                                                                                                                    BITEC
                  particular cap sheet application.                                                               Cap Sheet
A S S E M B L Y




                  4. Approved Roof Coating required on
                                                                                    12 "
                  SPS-3H; optional on APS-4T for 10
                  years, required for 12 years. Coating
                  may be required on mineral surfaced
                  membranes for UL or FM compliance.                                    12 "                                        4
                                                                                                                                  Optional
                  A warranty fee is required for uncoated                                                                         Coating
                  APS-4T for 10 years.
                                       
                                       ~~~
                                       QQQ
                                       
                                       ~~~
                                       
                                       
                                       
                      4. Nailable Deck, without Insulation
R O O F




                  10 year maximum warranty
                  –––––––––––––––––––––––––––––                                                                        Mopping asphalt
                  1. UL Type G2 Fiberglass Base Sheet                                                                  or heat welded
                                        PP
                                        |||
                                        zz
                                        yyy
                                        
                                        
                                        
                                        
                                        
                                        ,,,
                                        yyy
                                        zz
                                        |||
                                        
                                        ,,,
                                        
                                        
                  or Vented Base Sheet or an inverted       Nailable
                  G3 Fiberglass cap sheet fastened over      Deck
                  suitable deck with appropriate fasten-
                  ers and plates, 9" o.c. at base sheet
                  laps and two rows 18" o.c. staggered,
                  11" apart down center of sheet.                                               1
                                                                                           G2 Fiberglass
                  2. BITEC APP or SBS Cap Sheet                                             Base Sheet
                  applied according to specification for
                  particular cap sheet application.
                  3. Approved Roof Coating required on
                  SPS-3H; optional on APS-4T. Coating
                  may be required on mineral surfaced
                                                                                                                  2
                                                                                                                 BITEC
                  membranes for UL or FM compliance.                                                           Cap Sheet
                  A warranty fee is required for uncoated
                                                                                        9"
                  APS-4T.


                                                                                                 11"                           3
                                                                                                                             Optional
                                                                                 18 "
                                                                                                                             Coating




                                                                            56
                      
                      
                      
                      
                       ,,,,
                       
    5. Nailable Lightweight Concrete Deck
12 yr. max. warranty for 3 ply system
as shown. *A modified bitumen inter-
                                             Lightweight




                       
                       ,,,,
                        
                       ,,,, ,,,,
                       
                       ,,,,
ply is required for 15 or 20 yr. systems;
                                              Concrete
See specific system requirements.
                                               Nailable
–––––––––––––––––––––––––––––
                                                Deck
1. UL Type G2 Fiberglass Base Sheet
or Vented Base Sheet fastened with ap-
propriate fasteners and plates; 9" o.c. at
laps and 2 rows 11" apart down center
of sheet, 18" o.c. staggered, or as
                                                                         1
                                                                  G2 Fiberglass
required for FM approval.                                          Base Sheet
2. UL Type IV Fiberglass Ply Sheet
installed in a solid mopping of hot
                                                                                              2
                                                                                         Type IV
asphalt per specification. *A mod bit
interply is required for 15 and 20 year
systems.
                                                                                        Fiberglass
                                                                                        Ply Sheet               3
                                                                                                            BITEC
3. BITEC APP or SBS Cap Sheet                                                                             Cap Sheet
applied according to specification for                                      11"                                            4




                                                                                                                                  R O O F
particular cap sheet application.                                 9"
                                                                                     Mopping                           Optional
4. Approved Roof Coating required on                                                 asphalt                           Coating
SPS-3H and APS-4T. Coating may be                                                                     Mopping
required on mineral surfaced mem-                                                                     asphalt
branes for UL or FM compliance. A
warranty fee is required for 15 and 20
                                                           18 "
                                                                                                      or heat
                                                                                                      welded            5
                                                                                                                       Vents
year warranties.




                                                                                                                                  A S S E M B L Y
5. One-Way Vents required.




                                        ,,,
    6. Concrete Deck, Fully Adhered
10 year or 12 year max. warranty for




                                        ,,,
                                       ,,,
2 ply system as shown. A modified
                            
                            ,,,,
bitumen interply (not shown) is req’d.           Primed
for 15 and 20 year systems.                     Concrete
–––––––––––––––––––––––––––––                     Deck
1. Approved Insulation installed in a




                                       ,,,
                                             (Vents required)
solid mopping of hot asphalt, or me-
chanically fastened. Concrete deck
must first be primed and allowed to
thoroughly dry when asphalt is used.
                                                                            1
                                                                       Insulation




                                       ,,,
                                      ,,,
2. UL Type G2 Fiberglass Base Sheet
installed in a solid mopping of hot
                                                                                          2
                                                                                          G2
asphalt per specification.
3. BITEC APP or SBS Cap Sheet
                                                                                      Fiberglass
                                                                                      Base Sheet               3
                                                                                                           BITEC




                                       ,,,
                                      ,,,
applied according to specification for
                                                              Mopping                                    Cap Sheet
particular cap sheet application.
4. Approved Roof Coating required on
SPS-3H; optional on APS-4T for 10
                                                              asphalt
                                                              or fastened                                               4
                                                                                                                      Optional
                                                                                    Mopping
years, required for 12, 15 and 20 years.                                            asphalt                           Coating




                                      ,,,
                                                                                                     Mopping
Coating may be required on mineral                                                                   asphalt
surfaced membranes for UL or FM
compliance. A warranty fee is required
for 15 and 20 years.
                                                                                                     or heat
                                                                                                     welded            5
                                                                                                                      Vents
5. One-Way Vents required over con-
crete decks.


                                                                   57
                      7. Mech. Attached Insulation, Mopped Base Sheet




                                        ,,,,,,
                                        ,,,,,,
                                        ,,,,,,
                                        ,,,,,,
                                        ,,,,,,
                  12 Year maximum warranty for
                  SBS or APP membranes                                                          Mopping asphalt                      Mopping asphalt
                                                                                                                                     or heat welded
                  –––––––––––––––––––––––––––––
                  1. Approved Roof Insulation attached
                  per specification, over a suitable sub-
                                                                1
                                                             Insulation
                  strate.
                  2. UL Type G2 Fiberglass Base Sheet
                  installed as per specification in hot
                  asphalt.                                                                           2
                                                                                               G2 Fiberglass
                  3. BITEC APP or SBS Cap Sheet                                                 Base Sheet
                  applied according to specification for
                  particular cap sheet application.
                  4. Approved Roof Coating required for
                  all smooth surface sheets. Coating may
                  be required on mineral surfaced mem-
                                                                                                                                3
                                                                                                                               BITEC
                  branes for UL and FM compliance. No                                                                        Cap Sheet
                  warranty fee for 10 or 12 year systems.
A S S E M B L Y




                                                                ,,
                                                              
                  10 year maximum warranty for
                  uncoated APS-4T; a warranty fee is
                  required.
                                                                                                                                             4
                                                                                                                                           Coating
                                                                                                                                       reqired if not
                                                                                                                                      Mineral Surfaced




                                                           @@@@@
                                                           PPPPP
                                                           ,,,,,
                                                              ,,,
                                                              
                                                              
                                                              
                                                           PPPPP
                                                           ,,,,,
                                                           @@@@@
                                                                ,,
                                                                
                      8. Typical Re-Cover System


                                                           ,,,,,
                                                           PPPPP
                                                           @@@@@
R O O F




                  10 year or 12 year max. warranty is




                                                           @@@@@
                                                           ,,,,,
                                                           PPPPP
                  available. A 15 or 20 year warranty is        Existing
                  not available without tear-off of               Roof




                                                              
                                                              
                                                             
                                                              ,,
                                                              
                                                             
                  existing assembly.                             Surface




                                                           @@@@@
                                                           PPPPP
                                                           ,,,,,
                                                             (Vents required)
                  –––––––––––––––––––––––––––––
                  1. Approved Re-Cover Insulation at
                  least one layer (1⁄2" min. thickness),




                                                           @@@@@
                                                           PPPPP
                                                           ,,,,,
                  mechanically fastened with appropriate
                  type and quantity of fasteners, suitable                                1


                                                           ,,,,,
                                                           PPPPP
                                                           @@@@@
                  for deck and insulation board size.                                  Re-Cover
                                                                                       Insulation
                  2. UL Type G2 Fiberglass Base Sheet




                                                              
                                                             
                                                             
                                                             ,,,
                                                             
                                                             
                  installed in a solid mopping of hot                                                             2


                                                           PPPPP
                                                           @@@@@
                                                           ,,,,,
                  asphalt.                                                                                        G2
                  3. BITEC APP or SBS Cap Sheet                                                               Fiberglass
                                                                                                                                     3


                                                           @@@@@
                                                           ,,,,,
                                                           PPPPP
                                                                                                              Base Sheet
                  applied according to specification for
                  particular cap sheet application.                                                                              BITEC
                                                                                Mopping                                        Cap Sheet
                                                                                asphalt




                                                           ,,,,,
                                                           @@@@@
                                                           PPPPP
                  4. Approved Roof Coating required for
                  all smooth surface sheets. Coating may                                                                                         4
                                                                                                                                              Optional
                  be required on mineral surfaced mem-                                                     Mopping




                                                           @@@@@
                                                           PPPPP
                                                           ,,,,,
                  branes for UL and FM compliance. No                                                      asphalt                            Coating
                                                                                                                           Mopping
                  warranty fee for 10 or 12 year systems.                                                                  asphalt
                  10 year maximum warranty for
                  uncoated APS-4T; a warranty fee is
                  required.
                                                                                                                           or heat
                                                                                                                           welded              5
                                                                                                                                             Vents
                  5. One-Way Vents required.


                                                                                  58
                                       BUR-MOD SYSTEMS

     SCOPE AND PURPOSE                                Glass Fiber Base Sheet Used in                       IMPORTANT NOTICE
   To provide alternate roofing                       Roofing ; and Classified G2 by                    The roofing contractor, archi-
assemblies within our existing                        Underwriters Laboratories, Inc.               tect, specifier, or user of these
product lines, allowing for more                                  BUR-MOD                           systems must be familiar with all
economical systems within the                                   WARRANTIES                          BITEC, INC. standard specifica-
guidelines of industry competition.                      BITEC offers 10, 12, 15 and 20             tions for both Modified Bitumen
The BITEC BUR-MOD assem-                              year warranties for BUR-MOD                   systems and these hybrid systems
blies offer system parity without                     systems. Provisions for NDL and               which BITEC refers to as BUR-
compromising BITEC quality and                        FULL SYSTEM warranties are                    MOD SYSTEMS, for proper spec-
reputation.                                           also available when pre-approved              ification, detailing and installation.
               SYSTEM                                 by BITEC's Manager of Technical
         CONFORMANCE                                                                                    Pertinent information may be
                                                      Services. Warranty Request forms
                                                                                                    found in other sections of this
   Type IV and Type VI Ply sheets                     should be received on all projects
                                                      prior to start of the roofing appli-          manual. Before starting any pro-
must conform to ASTM D2178-
                                                                                                    ject using BITEC products, it is




                                                                                                                                             B U R - M O D
97a Standard Specification for                        cation for review and/or pre-
A s p h a l t G l a s s Fe l t U s e d i n            approval by BITEC's Technical                 recommended that all publications
Roofing and Waterproofing; and                        Services Department.                          relative to the project and BITEC
Classified G1 by Underwriters                                                                       products be consulted and under-
                                                         Warranty charges are subject
Laboratories, Inc.                                    to change without notice and are              stood.
   G2 Base sheet must conform                         available by contacting your                      Any questions should be di-
to ASTM D4601-97a Standard                            BITEC representative or the                   rected to the BITEC Technical
Specification for Asphalt-Coated                      Technical Services Department.                Services Dept. at (800) 535-8597.


                                            BUR-MOD SECTION CONTENTS




                                                                                                                                             S Y S T E M S
           Installation Parameters.................................................................................................. 60
           Base Sheet and Ply Sheet Product Trade Names..........................................................61
           Specification Numbers Chart .........................................................................................61
           Typical BUR Systems, 3 and 4-ply ............................................................................62-63

           DETAIL DRAWINGS:
                 #BM1 ........Draining Edge with Gutter .....................................................................64
                 #BM1a ......Draining Edge with Gutter, alternate.....................................................64
                 #BM2 ........Flat Draining Edge (Drip Edge, Gravel Stop).........................................65
                 #BM2a ......Flat Draining Edge (Drip Edge, Gravel Stop), alternate........................65
                 #BM7 ........Multi-Ply Base Flashing at Plywood Parapets .......................................66
                 #BM7A......High Parapet Base Flashing at Plywood Walls......................................66
                 #BM7B......High Parapet Base Flashing at Masonry Walls .....................................67
                 #BM7C......Multi-Ply Base Flashing at Masonry Parapets .......................................67
                 #BM28 ......Plumbing Vent Flashing .........................................................................68
                 #BM30 ......Hot Stack Flashing Curb........................................................................68

NOTE: Lower case "a" designates an alternate detail, and upper case
letters with detail numbers indicate additional similar details.



                                                                       59
                                   I N S TA L L AT I O N PA R A M E T E R S
                                                               tion of asphalt. The asphalt shall     acceptable for use within the
                         SECTION 1.00                          be applied in such a way that at       BITEC Bur-Mod systems:
                                                               no place will felt touch felt. All        1) BITEC, INC.
                           INSULATION                          plies of felt shall be broomed into
                                                                                                         2) TAMKO Roofing Prod., Inc.
                   In all cases a minimum of 1⁄2"              place as they are applied to aid
                thick perlite or high density wood             in adhesion ...”                          3) Black Warrior Roofing, Inc.
                fiber board insulation will be                                                           4) Fields Corporation
                installed as a buffering layer. Other                 SECTION 3.00                       5) Johns Manville (Schuller)
                insulations are acceptable for use                                                       No other base or ply sheet shall
                within these systems provided the                       CAP SHEET                     be used other than those given
                insulation manufacturer’s specifi-               Cap sheet shall be installed as      above unless approval is granted
                cations and BITEC’s specifications             per specifications given in the        from BITEC’s Technical Service
                are followed. See the General                  General Requirements SECTIONS          Department.
                Requirements SECTION 6.02 of                   2.03 and 2.04, pgs.17-18 of this          The above companies publish
                this manual.                                   manual.                                their compliance with standards for
S Y S T E M S




                   Insulation must be used with all                                                   the products shown on the next
                systems unless its use has been                                                       page, Table 1.
                                                                      SECTION 4.00
                waived by BITEC’s Technical
                Services Department.                                 SPECIFICATIONS                           SECTION 6.00
                                                                      AND DETAILS
                         SECTION 2.00                             Primary consultation for this          APPROVAL FOR USE
                                                               information shall come from this         OF BUR-MOD SYSTEMS
                        BASE SHEETS                            book, and The NRCA Roofing and           AS A SUBSTITUTE FOR
                       AND PLY SHEETS                          Waterproofing Manual.                       OUR STANDARD
                   Unless otherwise specified all                 All applicable publications shall     WARRANTY SYSTEMS
                base and ply sheets will be                    be consulted before work begins.
                                                                                                         Pre-approval by the Technical
B U R - M O D




                installed using hot asphalt as per                Some details for BUR-MOD sys-       Services Department is necessary
                BITEC’s published requirements                 tems are included in the following     in order to obtain a warranty for
                wh ich d e te r m i n e th e ty p e o f        section of this manual. These          these systems.
                asphalt to be used, asphalt appli-             details are simply variations of the
                                                                                                         All Warranty Requests must be
                cation rate, and asphalt applica-              details used for modified bitumen
                                                                                                      submitted in a reasonable amount
                tion temperature. See the General              systems.
                                                                                                      of time prior to the start of the pro-
                Requirements SECTIONS 1.02,                       Typically, for BUR-MOD sys-         ject for pre-approval.
                1.03 and 1.04 of this manual.                  tems, all Modified Bitumen Details
                                                                                                         As is always done with any
                   Under no circumstances will any             may be adapted to be used with
                                                                                                      extraordinary warranty scenario, a
                Type IV or Type VI Ply Sheet be                BUR-MOD Systems.
                                                                                                      special warranty document is used.
                mechanically attached. Under cer-                 This is generally accomplished
                tain conditions, however, the G2                                                         However, our standard Limited
                                                               by using the base and/or ply
                base sheet called for in the sched-                                                   Insured Roofing Warranty is applic-
                                                               sheets in lieu of the base and/or
                ule may be mechanically attached.                                                     able for any of the following sys-
                                                               interply membrane of the modified
                                                                                                      tems listed in Table 2, next page.
                   Allowance for this must be pre-             bitumen system.
                approved by BITEC’s Technical                     For any specific details not
                Services Department. For para-                 shown, contact BITEC Technical                 SECTION 7.00
                meters involving mechanically                  Services Dept. at (800) 535-8597.
                attaching G2 base sheets refer to                                                            SPECIFICATION
                SECTION 2.02, on pg.17 of this                        SECTION 5.00                             NUMBERS
                manual.                                                                                  Specification number format will
                   According to The NRCA                            ACCEPTABLE                        remain virtually the same with the
                R o o f i n g a n d Wa t e r p r o o f i n g     BASE AND PLY SHEET                   following changes shown in chart
                Manual:                                                                               on the next page.
                                                                 Base sheet and ply sheet from
                   “...plies shall be embedded                 the following companies are
                into a fluid, continuous applica-


                                                                               60
   APPROVED PRODUCTS - Base Sheet and Ply Sheet Product Trade Names
  Company                                   Base Sheet                   Type IV Ply Sheet            Type VI Ply Sheet
                                            (ASTM D 4601, Type II)       (ASTM D 2178, Type IV)       (ASTM D 2178, Type VI)


  BITEC, INC.                               BETA BASE                    BETA PLY IV                  BETA PLY VI
  TAMKO Roofing Products, Inc.              GLASS-BASE                   TAM-PLY IV                   TAM-GLASS PREMIUM
  Black Warrior Roofing, Inc.               Arrowglass Base              Arrowglass IV                Arrowglass VI
  Fields Corporation                        Fields F51                   Fields F54                   Fields F56
  Johns Manville (Schuller)                 GlasBase                     GlasPly IV                   GlasPly Premier
  Johns Manville (Schuller)                 PermaPly No. 28                                           PermaPly R

                                                          Table 1


                                       SPECIFICATION NUMBERS




                                                                                                                                      B U R - M O D
Warranty    Insulation
 Period     Required? .......1st Ply .......2nd Ply .......3rd Ply ........4th Ply.........Surfacing......Spec Suffix

12 Years        Yes .............4 or 6 .........4 or 6 ........APS-4T.............................Coating .............BM
 or Less        Yes .............4 or 6 .........4 or 6 ........SPS-3H ............................Coating..............BM
                Yes .............4 or 6 .........4 or 6.........Other* .........................................................

15 Years        Yes ...............G2 .............. 6 ...........APS-4T.............................Coating.............BM6
 or Less        Yes ...............G2 .............. 6 ...........SPS-3H .............................Gravel..............BM6
                Yes ...............G2 .............. 6 ............Other* ......................................................BM6
                Yes ...............G2 ...............4.................4 ............APS-4T .........Coating.............BM4




                                                                                                                                      S Y S T E M S
                Yes ...............G2 ...............4.................4............SPS-3H ..........Gravel..............BM4
                Yes ...............G2 ...............4.................4.............Other* ..................................BM4

20 Years        Yes.................6 ................6.................6 ............APS-4T .........Coating.............BM6
 or Less        Yes.................6 ................6.................6............SPS-3H ..........Gravel..............BM6
                Yes.................6 ................6.................6............APM-4T ..................................BM6
                Yes.................6 ................6.................6 ..........APM-4.5T.................................BM6
                Yes.................6 ................6.................6 ..........SPM-4.5T.................................BM6
                Yes.................6 ................6.................6 ..........SPM-3.5H ................................BM6
                Yes.................6 ................6.................6 ........SPM-4H/250...............................BM6
                Yes.................6 ................6.................6 ...........SPM-4H ..................................BM6
                Yes ...............G2 ...............6.................6 ............APS-4T .........Coating ............BMG
                Yes ...............G2 ...............6.................6............SPS-3H ..........Gravel .............BMG
                Yes ...............G2 ...............6.................6............APM-4T..................................BMG
                Yes ...............G2 ...............6.................6 ..........APM-4.5T ................................BMG
                Yes ...............G2 ...............6.................6 ..........SPM-4.5T ................................BMG
                Yes ...............G2 ...............6.................6 ..........SPM-3.5H ................................BMG
                                                          Other   * = All other BITEC Cap Sheets except ISA-4T and EGM-2H.
                                                          Table 2

                                     FOR EXAMPLE:
  SPM-3.5H.2.20.BMG = SPM-3.5H.nailable situation.twenty year system.BUR-MOD G2 as base
    APS-4T.1.15.BM4 = APS-4T.non-nailable situation.fifteen year system.BUR-MOD Type IV as interply
     SPS-3H.2.12.BM = SPS-3H.nailable situation.twelve year system.BUR-MOD Type IV or VI as base

                                                              61
                                                         ,,,,,,,
                                                BUR-MOD SYSTEMS
                1. Approved Roof Insulation                                              - 10 & 12 Year Systems -




                                                         ,,,,,,,
                attached per specifications, over
                suitable substrate.                          1. Typical 3-Ply System 2 Ply Sheets, Cap Sheet
                2. Type IV or VI Fiberglass ply
                sheets (2 Plies), ASTM D2178-97a




                                                         ,,,,,,,
                (UL Type G1), per specification
                requirement, installed in hot asphalt.
                3. BITEC APP or SBS Cap Sheet
                                                                           1
                                                                     INSULATION                                                      3
                applied according to specification.                                                                                 CAP




                                                         ,,,,,,,
                4. Approved Roof Coating required                                                                  36"
                                                                                                                                           393/8"
                for smooth surface sheets. Coating
                may also be required for any mineral
                                                                                            PLY
                                                                                                2
                surfaced membrane for compliance                                           SHEETS




                                                         ,,,,,,,
                with UL & FM requirements. No war-
                ranty fee is required, except for NDL
S Y S T E M S




                                                                                                    36"
                warranties.

                                                                                                                            3


                                                         ,,,,,,,
                                                                               27"                             17"
                                                                                                                            CAP

                                                                    9"
                                                                                                                                  191/2"
                                                                                                                                                4
                                                                                                                                             COATING




                                                         ,,,,,,,
                                                                                                              7"




                1. Approved Roof Insulation                                                     - 20 Year System -




                                                         ,,,,,,,
                attached per specifications, over
B U R - M O D




                suitable substrate.                          2. Typical 4-Ply System 3 Ply Sheets, Cap Sheet
                2. Type VI Fiberglass ply sheets, (3
                plies) ASTM D2178-97a (UL Type




                                                         ,,,,,,,
                G1), per specification requirement,
                installed in hot asphalt.                                   1
                                                                         INSULATION                                                           3
                3. BITEC APP or SBS Cap Sheet
                applied according to specification.                                                                                           CAP




                                                         ,,,,,,,
                4. Approved Roof Coating required                                                                                      393/8"
                for smooth surface APS-4T. Coating
                may also be required for any mineral
                surfaced membrane for compliance




                                                         ,,,,,,,
                with UL & FM requirements. Smooth
                surface SPS-3H must be surfaced                                           36"
                with a flood coat of hot asphalt and
                ASTM D1863-93 roofing gravel. A
                warranty fee is required.                                                                 2        111/3"     3



                                                         ,,,,,,,
                                                                             24"                     PLY VI                   CAP

                                                                  12"
                                                                                                     SHEETS
                                                                                                                   10"
                                                                                                                                    191/2"
                                                                                                                                                    4
                                                                                                                                                COATING




                     APPLICATION OF PLIES: Embed all plies using ASTM                  continuous and uninterrupted layer of asphalt to which
                     D312 Type III or Type IV asphalt. Application rate of 25          all plies are to be embedded. In no area should asphalt
                     lb/sq. is essential. Application of asphalt must provide a        be applied as to allow felt to touch felt.


                                                                                  62
                                           ,,,,,,,
                                 BUR-MOD SYSTEMS
1. Approved Roof Insulation attached                                              - 15 Year Systems -




                                           ,,,,,,,
per specifications, over suitable sub-
strate, required for 15 year systems,
except on lightweight insulating con-         3. 3-Ply with Base Sheet 1 Base Ply, 1 Ply Sheet, Cap Sheet
crete decks.
2. UL Type G2 Fiberglass Base Sheet




                                           ,,,,,,,
installed as per specification, either in
hot asphalt or mechanically attached.
3. Type VI Fiberglass ply sheets,
ASTM D2178-97a (UL Type G1), per
                                                   1


                                           ,,,,,,,
specification requirement, installed in
                                               INSULATION
hot asphalt.
4. BITEC APP or SBS Cap Sheet
applied according to specification.                               2
                                                                                          36"
                                                                                                 3                               CAP
                                                                                                                                      4
                                                                                                                                SHEETS




                                           ,,,,,,,
5. Approved Roof Coating required                            FIBERGLASS                         PLY VI
                                                             BASE SHEETS                        SHEETS
for smooth surface APS-4T. Coating




                                                                                                                                                        B U R - M O D
                                                               Full Width
may also be required for any mineral                                                                                393/8"
                                                       36"
surfaced membrane for compliance
with UL & FM requirements. Smooth




                                           ,,,,,,,
surface SPS-3H must be surfaced
with a flood coat of hot asphalt and
ASTM D1863-93 roofing gravel. A
                                                                              18"
                                                                                  Half Width
                                                                                  Ply Sheet
                                                                                                                                               5
                                                                                                                                          COATING




                                           ,,,,,,,
warranty fee is required.


1. Approved Roof Insulation attached                                        - 15 & 20 Year Systems -




                                           ,,,,,,,
per specifications, over suitable sub-




                                                                                                                                                        S Y S T E M S
strate, required for 15 or 20 year sys-
tems, except on lightweight insulating
                                              4. 4-Ply with Base Sheet 1 Base Ply, 2 Ply Sheets, Cap Sheet
concrete decks.




                                           ,,,,,,,
2. UL Type G2 Fiberglass Base Sheet                                         Full Width
installed as per specification, either in
hot asphalt or mechanically attached.
3. Type IV or Type VI Fiberglass ply                                                                            Full Width

                                                   1


                                           ,,,,,,,
sheets, ASTM D2178-97a (UL Type
G1), 2 plies, per specification require-      INSULATION
ment, installed in hot asphalt. Type IV
for 15 year systems; Type VI for 20                                                                                                       4
year systems.                                                    2                                 Full Width                          CAP




                                           ,,,,,,,
                                                          FIBERGLASS                     36"                                          SHEETS
4. BITEC APP or SBS Cap Sheet
applied according to specifications.
                                                       36"
                                                          BASE SHEETS
                                                               Full Width                           3
                                                                                                   PLY
                                                                                                                             393/8"

5. Approved Roof Coating required                                                                 SHEETS
for smooth surface APS-4T. Coating




                                           ,,,,,,,
may also be required for any mineral
surfaced membrane for compliance                                            18"                                                                 5
                                                                                                                                              COATING
with UL & FM requirements. Smooth                                               Half Width
                                                                                Ply Sheet
surface SPS-3H must be surfaced
with a flood coat of hot asphalt and
ASTM D 1863-93 roofing gravel. A
warranty fee is required.

      APPLICATION OF PLIES: Embed all plies using ASTM                  continuous and uninterrupted layer of asphalt to which
      D312 Type III or Type IV asphalt. Application rate of 25          all plies are to be embedded. In no area should asphalt
      lb/sq. is essential. Application of asphalt must provide a        be applied as to allow felt to touch felt.


                                                                   63
                       1. Draining Edge with Gutter




                                                              
                                                              ,
                                                             
                BUR
                MOD




                                                              
                                                              
                                                             
                                                                                                                    BITEC flashing membrane
                 Seal with modified bitumen                                                                         edge strip
                 or asphalt bleed out at edges

                  Metal edge trim with flange                                                                        BITEC field membrane,
                                                                      4" min.        4" min.                        turned down over edge with
                  primed top and bottom and
                     set in modified bitumen                                                                         optional surfacing or coating
                        sealant. Nails 3" o.c.
                                  staggered.
                                                                                                                                One or two plies of
                                                                                                                                Type IV or Type VI
                                                                                                                                interply felts, set in
                1" minimum height difference                                                                                    hot asphalt



                                                                                                                    Base sheet or 1st ply as
                                                                                                                    required
                 Gutter with straps
                    or supports as
                required by project                                                                                 Roof insulation
S Y S T E M S




                            details
                                                                                                                    Roof deck

                                                                                                                    Wood blocking, secured with
                       When face dimension                                                                          appropriate fasteners; match
                  exceeds 2.5", a continuous                                                                        insulation thickness
                  hook strip may be required




                BUR
                MOD     1a. Draining Edge with Gutter, alternate
B U R - M O D




                                                              
                                                              
                                                             
                                                                                               BITEC cap membrane over
                                                                                               metal edge flashing.
                             Seal with modified                                                              BITEC smooth membrane,
                             bitumen or asphalt                                                              turned down over edge.
                             bleed out at edges                                                              Extend min. of 6 - 8" past
                                                                                                             edge of metal flange
                     Metal edge trim with flange                                                                      One or two plies of Type IV or
                 primed top & bottom and set in                       4"                                              Type VI interply felts, set in hot
                      modified bitumen sealant.                                                                       asphalt
                        Nails 3" o.c. staggered.
                                   RE: Detail #2



                                    1" minimum
                               height difference



                                                                                                                    Base sheet or 1st ply as
                                                                                                                    required.


                                                                                                                    Roof insulation

                                                                                                                    Roof deck

                                                                                                                    Wood blocking, secured with
                                                                                                                    appropriate fasteners; match
                        Gutter with straps                                                                          insulation thickness
                              as required
                                                                                                     When face dimension exceeds 2.5", a
                                                                                                     continuous hook strip may be required


                                             CAUTION: This alternate edge detail is not in compliance with FM Loss
                                                   Prevention Data Bulletin I-49 for Perimeter Flashings




                                                                                64
BUR
      2. Flat Draining Edge (Drip Edge, Gravel Stop)




                                                
                                                ,,
                                                
MOD



  Metal fascia, gravel stop with
                                                                                                                                        Modified bitumen or asphalt
  low raised edge or plain drip
                                                                                                                                        bleed out at edges
    edge without raised lip. (4"                                                                             4"
                                                                                                                  mi
     min. flange width) Prime                                                                                       n.
         flange top and bottom
                                                                                                                           4"
                                                                                                                                mi
     Roof flange, 4" min. width                                                                                                   n.

Modified bitumen sealant under                                                 1-1/2"                         3"
                  metal flange




                                                
                                                
                                                
                                                                                                 3"

                                                                                  1/2"
                                                                                                                                        BITEC membrane edge strip

                                                                                                                                        BITEC field membrane turned
                                                                                                                                        down over edge with optional
                                                                                                                                        surfacing or coating

              Continuous cleat                                                                                                          Fasteners 3" o.c., staggered
                                                                                                                                        as shown
  Wood blocking, secured with
  appropriate fasteners, match                                                                                                          One or two plies of Type IV or
           insulation thickness                                                                                                         Type VI interply felts, set in hot




                                                                                                                                                                             B U R - M O D
                                                                                                                                        asphalt
                Roof insulation

                     Steel deck                                                                                                         Base sheet or first ply
                                                                                                                                        as required.



                                   LAP JOINT DETAIL (preferred)                              JOINT COVER DETAIL (alternate)
                                                                    (PLAN VIEWS)
                                             4" min.                                                        as specified
                                                                     4" min.




                                 sealant
                                                          5 nails                 1/4" min. space,
                           between joints                                                                                  4 nails
                                                                                   fill with sealant




                                                                                                                                                                             S Y S T E M S
BUR
      2a. Flat Draining Edge (Drip Edge, Gravel Stop), alternate




                                                ,,
                                                
                                                
MOD


 Metal fascia, gravel stop with
 low raised edge or plain drip                                                                                                         Modified bitumen or asphalt
   edge without raised lip. (4"                                                                                                        bleed out at edge
     min. flange width) Prime
        flange top and bottom
    Roof flange, 4" min. width
                                                                                        4"

     Modified bitumen sealant                                                                                3"
                                                                               1-1/2"
           under metal flange                                                                     6t




                                                
                                                
                                                
                                                                                                       o8
                                                                                                         "
                                                                                1/2"
                                                                                                                                       BITEC field membrane over
                                                                                                                                       metal edge flashing

                                                                                                                                       BITEC smooth membrane turned
                                                                                                                                       down over edge
             Continuous cleat

                                                                                                                                       Fasteners 3" o.c., staggered
 Wood blocking, secured with                                                                                                           as shown
 appropriate fasteners, match
          insulation thickness
                                                                                                                                       One or two plies of Type IV or
                                                                                                                                       Type VI interply felts, set in hot
               Roof insulation                                                                                                         asphalt
                    Steel deck
                                                                                                                                       Base sheet or first ply
                                                                                                                                       as required.


                                                            (See Lap Joint detail - #2)
                            CAUTION: This alternate edge detail is not in compliance with FM Loss
                                  Prevention Data Bulletin I-49 for Perimeter Flashings



                                                                               65
                BUR
                MOD     7. Multi-Ply Base Flashing at Plywood Parapets
                          Wall flashing membrane                                                                                Coping - Designed to meet FMRC 1-49
                                                                                                                                requirements
                             Interply membrane(s)




                            
                            
                            ,, ,
                                                                                                                                Fasteners approx. 18" o.c. at coping
                      Exterior plywood on cleat or




                            ,, ,,
                             
                             
                            ,
                tapered blocking to provide shape




                             
                              
                               
                              Solid wood blocking


                 Fiberglass G2 base sheet, nailed
                 tight to plywood, fastened 8" o.c.
                    each direction and unattached
                         over the lower base sheet
                                                                                                                                Fasteners 8" o.c.

                                                                                                                                Sealant

                                                                                                                                Termination bar
                                                                                                                                Counterflashing

                  Exterior siding, brick, etc. (wood                                                                            BITEC base flashing (8" min.; 24" max.
                  framed wall construction shown                                                                                height), extend 2" min. up under wall
                                                                                                                                flashing
                                                                                                                                BITEC base flashing interply membrane,
                                                                                                                                extend 2" min. up under next membrane

                                                                                                                                Fasteners 8" o.c. above the base sheet




                                                                    
                                                                     
                                                                     ,
                                                                    
                                                                    24" max.                                                    BITEC modified bitumen membrane with
S Y S T E M S




                      Cant strip, securely nailed or                                                                            optional surfacing or coating, extend 4"
                                     set in bitumen                                                              in.            minimum above cant

                                
                     Wood blocking, secured with
                     appropriate fasteners, match
                              insulation thickness
                                 ,
                                    Roof insulation
                                                                                 DR Y
                                                                                  DR
                                                                                   Y




                                                                                            DR
                                                                                                 Y
                                                                                                           4"
                                                                                                                m

                                                                                                                                Modified bitumen or asphalt bleed out
                                                                                                                                at edge of base flashing

                                                                                                                                One or two plies of Type IV or Type VI
                                                                                                                                interply felts, set in hot asphalt, extend
                                                                                                                                to 4" min. above cant

                                                                                                                                Base sheet and/or first ply as required,
                 Note: This detail should be used only where the deck is                                                        fully adhered, extend 2" min. above
                 supported by the wall. An expansion joint detail should be                                                     the cant
                 used for non wall-supported deck. Contact BITEC Technical
                 Services for suitability of attachment if building movement is not a concern.
                                                                                                                                 Required for 15 & 20 Yr. Warranty

                BUR
                        7A. Base Flashing at Plywood Parapets
B U R - M O D




                MOD


                                                                                                                                  Coping - Designed to meet FMRC
                                                                                                                                  1-49 requirements

                                                                                                                                  Wall flashing membrane
                          Exterior plywood on cleat
                             or tapered blocking to                                                                               Fasteners approx. 18" o.c. at coping
                                      provide shape

                                                                                                                                  Fasteners 8" o.c.
                               Solid wood blocking

                                                                                                                                  Sealant

                  Fiberglass G2 base sheet, nailed
                  tight to plywood, fastened 8" o.c.
                each direction and unattached over                                                                                Termination bar
                               the lower base sheet
                                                                                                                                  Counterflashing
                   Exterior siding, brick, etc. (wood
                   framed wall construction shown)
                                                                                                                                  BITEC base flashing membrane, extend
                                                                                                                                  2" min. under wall flashing membrane
                                                 ,,


                                                                                                                                  Fasteners 8" o.c. above base sheet
                                                                               24"




                                                                                        
                                                                                        
                                                                                        ,,
                                                                                        
                                                                               max.                                               BITEC modified bitumen membrane with
                         Cant strip, securely nailed
                                   or set in bitumen                                                                              optional surfacing or coating extend 4"
                                                                                            DR




                                                                                                                         min.     min. above cant
                                                                                                                    4"
                                                                                             Y
                                                                                      DR
                                                  ,
                                                  ,                                   Y




                      Wood blocking, secured with                                                                                 Modified bitumen or asphalt bleed out
                      appropriate fasteners, match                                                    DR                          at edge of base flashing
                               insulation thickness                                                     Y

                                                                                                                                  First and second ply as required, extend
                                                                                                                                  2" min. above the cant, set in hot
                                                   
                                                   ,
                                                   
                                                   
                                                   
                                                   
                                                   


                 Note: This detail should be used only where the deck is                                                          asphalt.
                 supported by the wall. An expansion joint detail should be
                 used for non wall-supported deck. Contact BITEC Technical
                 Services for suitability of attachment if building movement is not a concern.

                                                                                                                                    For 10 or 12 Yr. Warranty Only

                                                                                                 66
BUR
MOD     7B. High Parapet Base Flashing at Masonry Walls
                                                                                      Coping - Designed to meet FMRC
                                                                                      1-49 requirements

                                                                                      Wall flashing membrane

      Exterior plywood on cleat or                                                    Fasteners approx. 18" o.c. at coping
tapered blocking to provide shape




                                        ,, , ,
                                                                                      Fasteners 8" o.c.
              Solid wood blocking




                                         ,, , ,
                                                                                      Sealant



          Prime masonry surfaces

         Exterior siding, brick, etc.
                                          ,,,,,                                       Termination bar

                                                                                      Counterflashing
                                                                                      BITEC base flashing membrane,
                                                                                      extend 2" minimum up under wall
                                                                                      flashing membrane
                                                                                      Fasteners 8" o.c. above base sheet
                                                      24" max.




                                                                                                                                       B U R - M O D
                                                                 ,,
                                                                 
                                                                 
                                                                 
       Cant strip, securely nailed                                                    BITEC modified bitumen
                 or set in bitumen                                                    membrane with opt. surfacing or
                                              ,
                                              
                                                                                n.    coating, extend 4" min. above cant
                                                                            mi
          Wood blocking, secured                                       4"
       with appropriate fasteners,                                                    Modified bitumen or asphalt bleed out
       match insulation thickness                                                     at edge of base flashing

                                                                                      1st and 2nd ply as required, fully
                                                                                      adhered, extend 2" min. above the
Note: This detail should be used only where the                                       cant. Set in hot asphalt.
deck is supported by the wall. An expansion joint
detail should be used for non wall-supported deck. Contact
BITEC Technical Services if building movement is a concern.
                                                                                         For 10 or 12 Yr. Warranty Only

BUR
MOD     7C. Multi-Ply Base Flashing at Masonry Parapets




                                                                                                                                       S Y S T E M S
        Wall flashing membrane                                                       Coping - Designed to meet FMRC
                                                                                     1-49 requirements
           Interply membrane(s)


    Exterior plywood on cleat or                                                     Fasteners approx. 18" o.c. at coping
             tapered blocking to
                  provide shape
                                                                                     Fasteners 8" o.c.
             Solid wood blocking
                      ,,,,,,


                                                                                     Sealant

                                                                                     Termination bar
        Prime masonry surfaces
                                                                                     Counterflashing
                                                                                     BITEC base flashing membrane,
       Exterior siding, brick, etc.                                                  extend 2" up under wall flashing membrane
                   (masonry wall
            construction shown)
                                                                                     BITEC base flashing interply membrane,
                                                                                     extend 2" min. up under the next membrane

                                                                                     Fasteners 8" o.c. above the base sheet




                                                 
                                                  ,
                                                  
                                                 
                                                   24"                               BITEC modified bitumen membrane with
                                                   max.
                           
                           ,,
                           


                                                                                     optional surfacing or coating, extend 4"
                                                                             n.      minimum above cant
                                                                           mi
      Cant strip, securely nailed                                     4"
                or set in bitumen                                                    Modified bitumen or asphalt bleed out
                                                                                     at edge of base flashing
   Wood blocking, secured with
                             



   appropriate fasteners, match                                                      One or two pies of Type IV or Type VI
            insulation thickness                                                     interply felts set in hot asphalt; extend to 4"
                                                                                     above the cant
                                                                                     Base sheet and/or 1st ply as required, fully
   Note: This detail should be used only where the                                   adhered, extend 2" min. above the cant
   deck is supported by the wall. An expansion joint
   detail should be used for non wall-supported deck. Contact
   BITEC Technical Services if building movement is a concern.
                                                                                      Required for 15 & 20 Yr. Warranty

                                                                 67
                BUR
                MOD   28. Plumbing Vent Flashing




                                      
                                     , ,,
                                                                                              Modified bitumen or asphalt
                      Roll lead flashing 1"                                                   seal around all pipe
                       down into the pipe                                                     penetrations


                                                                                              Set lead flange in modified
                                                                                              bitumen sealant. Prime the
                                                                                              flange top and bottom before
                                                                                              stripping. 4" min. flange width




                                      ,,
                                      
                                                                                              Modified bitumen target
                                                                                              flashing over the field
                                                                                              membrane joints.


                                                                                               Modified bitumen or asphalt
                                                                                               bleed out at edges




                                        
                                        
                                                                         4"
                              Roof insulation
                                                                                              Rounded corners
S Y S T E M S




                     Plumbing vent stack                                                      BITEC modified bitumen field
                                                                                              membrane with optional
                                                                                              surfacing or coating
                   Treated wood blocking
                                                                                              BITEC smooth surface
                                                                                              modified bitumen collar
                                                                                              membrane, extend 6" min.
                 Modified bitumen sealant                                                     beyond edge of metal flange

                                                                                              Base sheet or 1st, and 2nd
                 Note:                                                                        ply as required
                 Sheet lead minimum of 2-1/2 lbs. per foot.

                                                                                          For 10 or 12 Yr. Warranty Only

                BUR
                      30. Hot Stack Flashing Curb
B U R - M O D




                MOD




                                     ,
                                     ,,
                                                                                              High temperature Elastomeric
                                                                                              sealant if not welded
                             Wood curb,
                       10" nominal height                                                     Draw band or weld the
                                                                                              umbrella to stack




                                       ,
                 Cant strip, set in bitumen                                                   Metal umbrella
                                   or nailed                                                  (Rain collar or storm collar)

                                                                                              Seal top of flashing with fabric
                                                                                              tape and sealant
                                                                                              Counterflashing fastened
                      Roof                                                                    approx. 12" o.c. with a
                 insulation                                                                   minimum of 3 per side
                                                                                              Removable counterflashing
                                        ,
                                        
                                        
                                        

                                        
                                         ,
                                        
                                                                                              Fasteners approx. 8" o.c.




                                       ,
                                                                                              Modified bitumen or asphalt
                                                                                              bleed out at edges
                Wood blocking, secured to
                   deck with appropriate                                                      Rounded corners




                                       ,
                                         

                    fasteners, match the                                                      BITEC modified bitumen base
                     insulation thickness                                          min.       flashing with 8" min. height
                                                                              4"              above roof surface
                      Metal sleeve where                                                      BITEC modified bitumen field
                   required (Insulate void                                                    membrane with optional
                           for cold pipes)                                                    surfacing or coating. Extend
                                                                                              4" min. above cant
                Note                                                                          Base sheet or 1st, and 2nd ply
                This detail allows the opening to be                                          as required, extend 2" min.
                completed before the stack is placed. The                                     above cant. Set Type IV &
                metal sleeve and the clearance necessary will                                 Type VI ply felts in hot asphalt
                depend on the temperature of the material handled
                by the stack.

                                                                                          For 10 or 12 Yr. Warranty Only

                                                                    68
                                                             NOTES




                                                                                                                                                       G E N E R A L
                                                                                                                                                       R E Q U I R E M E N T S




All Information is given in good faith, but nor-   vidual requirements of each contract. In con-    forth at the date of warranty issuance, and
mal tolerances of manufacture and testing will     sideration of the many factors involved, BITEC   any addendums thereto. Under no circum-
apply. BITEC reserves the right to improve         cannot be held responsible for the application   stances will BITEC be held liable for any dam-
and change its products at any time without        of its products and for conditions beyond its    age, whether personal injury or property dam-
prior notice or advice. The use of BITEC prod-     control. All claims filed against BITEC war-     age, which occur during or after the application
ucts is determined by local conditions and indi-   ranties will be subject to the provisions set    of the membrane.
                                                                                #4-3M-01/02-6




                                                     TM

                       Visit our web site at www.bi-tec.com
MANUFACTURERS OF ADVANCED TECHNOLOGY WATERPROOFING MEMBRANES
P.O. Box 497 • Morrilton, Arkansas 72110 • Fax (501) 354-3019 • Phone (800) 535-8597

				
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