SECTION 07550 EPDM MEMBRANE ROOFING PART 1 GENERAL 1 1 RELATED DOCUMENTS A Drawings and general provisions of the Contract including General and Supplementary

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SECTION 07550 EPDM MEMBRANE ROOFING PART 1 GENERAL 1 1 RELATED DOCUMENTS A Drawings and general provisions of the Contract including General and Supplementary Powered By Docstoc
					SECTION 07550 - EPDM MEMBRANE ROOFING

PART 1 - GENERAL

1.1        RELATED DOCUMENTS

      A.   Drawings and general provisions of the Contract, including General and Supplementary
           Conditions and Division 1 Specification Sections, apply to this Section.

1.2        SUMMARY

      A.   This Section includes the following:

           1.    Adhered EPDM membrane roofing system.
           2.    Roof walkway pads.
           3.    Roof insulation.

      B.   Related Sections include the following:

           1.    Division 6 Section "Rough Carpentry" for wood nailers, curbs, and blocking.
           2.    Division 7 Section "Sheet Metal Flashing and Trim" for metal roof penetration flashings,
                 flashings, and counterflashings.

      C.   Unit Prices: Refer to Division 1 Section "Unit Prices" for description of Work in this Section
           affected by unit prices.

      D.   Alternates: Refer to Division 1 Section “Alternates” for description of Work in this Section
           affected by Alternates.

1.3        DEFINITIONS

      A.   Roofing Terminology: Refer to ASTM D 1079 and glossary of NRCA's "The NRCA Roofing
           and Waterproofing Manual" for definition of terms related to roofing work in this Section.

      B.   Factored Design Uplift Pressure: The uplift pressure, calculated according to procedures in
           SPRI's "Wind Load Design Guide for Fully Adhered and Mechanically Fastened Roofing
           Systems," after multiplication by a safety factor.

1.4        PERFORMANCE REQUIREMENTS

      A.   General: Provide installed roofing membrane and base flashings that remain watertight; do not
           permit the passage of water; and resist specified uplift pressures, thermally induced movement,
           and exposure to weather without failure.

      B.   Material Compatibility: Provide roofing materials that are compatible with one another under
           conditions of service and application required, as demonstrated by roofing membrane
           manufacturer based on testing and field experience.

      C.   Factory Mutual Global (FMG) Listing: Provide roofing membrane, base flashings, and
           component materials that comply with requirements in FMG 4450 and FMG 4470 as part of a
           membrane roofing system and that are listed in FMG's "Approval Guide" for Class 1 or
           noncombustible construction, as applicable. Identify materials with FMG markings.

           1.    Fire/Windstorm Classification: Class 1A-90, 72 MHP peak wind speed.


EPDM MEMBRANE ROOFING                                                                            07550- 1
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1.5        SUBMITTALS

      A.   Product Data: For each type of product indicated.

      B.   Shop Drawings: For roofing system.           Include plans, elevations, sections, details, and
           attachments to other Work.

           1.    Base flashings and membrane terminations.
           2.    Tapered insulation, including slopes.
           3.    Insulation fastening patterns.

      C.   Installer Certificates: Signed by roofing system manufacturer certifying that Installer is
           approved, authorized, or licensed by manufacturer to install roofing system.

      D.   Manufacturer Certificates: Signed by roofing manufacturer certifying that roofing system
           complies with requirements specified in "Performance Requirements" Article.

           1.    Submit evidence of meeting performance requirements.

      E.   Qualification Data: For Installer and manufacturer.

      F.   Product Test Reports: Based on evaluation of comprehensive tests performed by manufacturer
           and witnessed by a qualified testing agency, for components of roofing system.

      G.   Maintenance Data: For roofing system to include in maintenance manuals.

      H.   Warranties: Special warranties specified in this Section.

      I.   Inspection Report: Copy of roofing system manufacturer's inspection report of completed
           roofing installation.

1.6        QUALITY ASSURANCE

      A.   Installer Qualifications: A qualified firm that is approved, authorized, or licensed by roofing
           system manufacturer to install manufacturer's product and that is eligible to receive
           manufacturer's warranty.

           1.    Installer must have a minimum of three (3) years experience installing the roof system
                 specified.
           2.    Job Site Superintendent must have a minimum of 5 years experience in roofing.

      B.   Manufacturer Qualifications: A qualified manufacturer that has UL listing and FMG approval
           for membrane roofing system identical to that used for this Project.

      C.   Testing Agency Qualifications: An independent testing agency with the experience and
           capability to conduct the testing indicated, as documented according to ASTM E 548.

      D.   Source Limitations: Obtain components for membrane roofing system approved by roofing
           membrane manufacturer.

      E.   Fire-Test-Response Characteristics: Provide membrane roofing materials with the fire-test-
           response characteristics indicated as determined by testing identical products per test method
           below by UL, FMG, or another testing and inspecting agency acceptable to authorities having



EPDM MEMBRANE ROOFING                                                                            07550- 2
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           jurisdiction. Materials shall be identified with appropriate markings of applicable testing and
           inspecting agency.

           1.    Exterior Fire-Test Exposure: Class A; ASTM E 108, for application and roof slopes
                 indicated.
           2.    Fire-Resistance Ratings: ASTM E 119, for fire-resistance-rated roof assemblies of which
                 roofing system is a part.

      F.   Preinstallation Conference: Conduct conference at Project site. Comply with requirements in
           Division 1 Section "Project Management and Coordination." Review methods and procedures
           related to roofing system including, but not limited to, the following:


           1.    Meet with Owner, Architect, Owner, roofing Installer, roofing system manufacturer's
                 representative, deck Installer, and installers whose work interfaces with or affects roofing
                 including installers of roof accessories and roof-mounted equipment.
           2.    Review methods and procedures related to roofing installation, including manufacturer's
                 written instructions.
           3.    Review and finalize construction schedule and verify availability of materials, Installer's
                 personnel, equipment, and facilities needed to make progress and avoid delays.
           4.    Examine deck substrate conditions and finishes for compliance with requirements,
                 including flatness and fastening.
           5.    Review structural loading limitations of roof deck during and after roofing.
           6.    Review base flashings, special roofing details, roof drainage, roof penetrations,
                 equipment curbs, and condition of other construction that will affect roofing system.
           7.    Review governing regulations and requirements for insurance and certificates if
                 applicable.
           8.    Review temporary protection requirements for roofing system during and after
                 installation.
           9.    Review roof observation and repair procedures after roofing installation.

1.7        DELIVERY, STORAGE, AND HANDLING

      A.   Deliver roofing materials to Project site in original containers with seals unbroken and labeled
           with manufacturer's name, product brand name and type, date of manufacture, and directions for
           storing and mixing with other components.

      B.   Store liquid materials in their original undamaged containers in a clean, dry, protected location
           and within the temperature range required by roofing system manufacturer. Protect stored
           liquid material from direct sunlight.

           1.    Discard and legally dispose of liquid material that cannot be applied within its stated
                 shelf life.

      C.   Protect roof insulation materials from physical damage and from deterioration by sunlight,
           moisture, soiling, and other sources. Store in a dry location. Comply with insulation
           manufacturer's written instructions for handling, storing, and protecting during installation.

      D.   Handle and store roofing materials and place equipment in a manner to avoid permanent
           deflection of deck.




EPDM MEMBRANE ROOFING                                                                              07550- 3
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1.8        PROJECT CONDITIONS

      A.   Weather Limitations: Proceed with installation only when existing and forecasted weather
           conditions permit roofing system to be installed according to manufacturer's written instructions
           and warranty requirements.

1.9        WARRANTY

      A.   Manufacturer’s Warranty: Manufacturer's form, without monetary limitation, in which
           manufacturer agrees to repair or replace components of roofing system that fail in materials or
           workmanship within specified warranty period. Failure includes roof leaks.

           1.    Special warranty includes roofing membrane, base flashings, roofing membrane
                 accessories roof insulation fasteners cover boards walkway products and other
                 components of roofing system.
           2.    Warranties that allow for arbitration are not acceptable.
           3.    Warranty must allow for litigation in the State of Missouri and be subject to Missouri law
                 per Chapter 506, Section 506.500 of the Missouri Statutes.
           4.    Indicate by letter that “All roofing components exclusive of the deck are approved and
                 compatible with the warranty requirements of the roof system as specified, and that the
                 warranty specified will be issued at completion of the project if system is installed as
                 designed.”
           5.    Owner reserves the right to purchase a Twenty (20) year warranty for all of the roofs
                 covered under the scope of work, up through the substantial completion of the project.
           6.    Warranty Period Requested: Fifteen (15) years from date of Substantial Completion.

      B.   Installers Warranty: Submit roofing Installer's warranty, on warranty form at end of this
           Section, signed by Installer, covering Work of this Section, including all components of roofing
           system such as roofing membrane, ply sheets, base sheets, base flashing, roof insulation,
           fasteners, cover boards, and walkway products, for the following warranty period:

           1.    The liability of the Surety Company under the installer warranty provisions of this
                 contract is limited to correcting defective workmanship and materials for a period of two
                 years from the substantial completion date of the project. Any warranty beyond the first
                 two years is an agreement between the owner and the contractor and falls outside the
                 performance bond obligation.

           2.    Warranty Period: Five (5) years from date of Substantial Completion.

PART 2 - PRODUCTS

2.1        MANUFACTURERS

      A.   In other Part 2 articles where subparagraph titles below introduce lists, the following
           requirements apply for product selection:

           1.    Available Products: Subject to compliance with requirements, products that may be
                 incorporated into the Work include, but are not limited to, the products specified.
           2.    Products: Subject to compliance with requirements, provide one of the products
                 specified.
           3.    Available Manufacturers: Subject to compliance with requirements, manufacturers
                 offering products that may be incorporated into the Work include, but are not limited to,
                 the manufacturers specified.



EPDM MEMBRANE ROOFING                                                                              07550- 4
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           4.    Manufacturers: Subject to compliance with requirements, provide products by the
                 manufacturers specified.

2.2        EPDM ROOFING MEMBRANE

      A.   EPDM Roofing Membrane: ASTM D 4637, Type I, nonreinforced uniform, flexible sheet
           made from EPDM, and as follows:

           1.    Manufacturers:

                 a.    Carlisle SynTec Incorporated.
                 b.    Firestone Building Products Company.
                 c.    GenFlex Roofing Systems.
                 d.    Johns Manville International, Inc.
                 e.    Stafast Roofing Products.
                 f.    Versico Inc.

The manufacturer's listed in 2.2, are approved systems indicating the minimum level of quality re-
quired. To be considered as an "Acceptable Substitution." other systems must be approved 10 days
in advance of bidding as per General Conditions.

           2.    Thickness: 60 mils, nominal.
           3.    Exposed Face Color: Black.

2.3        AUXILIARY MATERIALS

      A.   General: Auxiliary materials recommended by roofing system manufacturer for intended use
           and compatible with membrane roofing.

           1.    Liquid-type auxiliary materials shall meet VOC limits of authorities having jurisdiction.

      B.   Sheet Flashing:   60-mil- (1.5-mm-) thick EPDM, partially cured or cured, according to
           application.

      C.   Bonding Adhesive: Manufacturer's standard bonding adhesive.

      D.   Seaming Material: Manufacturer's standard synthetic-rubber polymer primer and 3-inch- (75-
           mm-) wide minimum, butyl splice tape with release film.

      E.   Lap Sealant: Manufacturer's standard single-component sealant.

      F.   Water Cutoff Mastic: Manufacturer's standard butyl mastic sealant.

      G.   Metal Termination Bars: Manufacturer's standard predrilled stainless-steel or aluminum bars,
           approximately 1 by 1/8 inch (25 by 3 mm) thick; with anchors.

      H.   Metal Battens: Manufacturer's standard aluminum-zinc-alloy-coated or zinc-coated steel sheet,
           approximately 1 inch (25 mm) wide by 0.05 inch (1.3 mm) thick, prepunched.

      I.   Fasteners: Factory-coated steel fasteners and metal or plastic plates meeting corrosion-
           resistance provisions in FMG 4470, designed for fastening membrane to substrate, and
           acceptable to membrane roofing system manufacturer.




EPDM MEMBRANE ROOFING                                                                             07550- 5
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      J.   Miscellaneous Accessories: Provide pourable sealers, preformed cone and vent sheet flashings,
           preformed inside and outside corner sheet flashings, T-joint covers, in-seam sealants,
           termination reglets, cover strips, and other accessories.

      K.   Liquid coating, specifically formulated for coating EPDM roofing membrane, as follows:
           (Delete this section unless MONG project requirement.)

           1.    Type: Hypalon.
           2.    Color: White.

2.4        ROOF INSULATION

      A.   General: Provide preformed roof insulation boards that comply with requirements and
           referenced standards, selected from manufacturer's standard sizes and of thicknesses indicated.

      B.   Extruded Polystyrene Insulation.

           1.    Manufacturers:

                 a.    DiversiFoam Products
                 b.    Dow Chemical Company
                 c.    Owens Corning
                 d.    Pactiv Building Products Division

2.5        INSULATION ACCESSORIES

      A.   General: Furnish roof insulation accessories recommended by insulation manufacturer for
           intended use and compatible with membrane roofing.

      B.   Fasteners: Factory-coated steel fasteners and metal or plastic plates meeting corrosion-
           resistance provisions in FMG 4470, designed for fastening roof insulation to substrate, and
           acceptable to roofing system manufacturer.

      C.   Low-Rise Foam Adhesive:        Manufacturer's standard adhesive formulated to adhere roof
           insulation to substrate.

      D.   Cover Board: ASTM C 1289, Firestone ISOGARD HD Cover Board, 1/2 inch (13 mm) thick.

2.6        WALKWAYS

      A.   Flexible Walkways: Factory-formed, nonporous, heavy-duty, solid-rubber, slip-resisting,
           surface-textured walkway pads, approximately 3/16 inch (5 mm) thick, and acceptable to
           membrane roofing system manufacturer.

PART 3 - EXECUTION

3.1        EXAMINATION

      A.   Examine substrates, areas, and conditions, with Installer present, for compliance with the
           following requirements and other conditions affecting performance of roofing system:

           1.    Verify that roof openings and penetrations are in place and set and braced and that roof
                 drains are securely clamped in place.



EPDM MEMBRANE ROOFING                                                                            07550- 6
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           2.    Verify that wood blocking, curbs, and nailers are securely anchored to roof deck at
                 penetrations and terminations and that nailers match thicknesses of insulation.
           3.    Verify that surface plane flatness and fastening of steel roof deck complies with
                 requirements in Division 5 Section "Steel Deck."
           4.    Verify that minimum concrete drying period recommended by roofing system
                 manufacturer has passed.
           5.    Verify that concrete substrate is visibly dry and free of moisture. Test for capillary
                 moisture by plastic sheet method according to ASTM D 4263.
           6.    Verify that concrete curing compounds that will impair adhesion of roofing components
                 to roof deck have been removed.
           7.    Proceed with installation only after unsatisfactory conditions have been corrected.

3.2        PREPARATION

      A.   Clean substrate of dust, debris, moisture, and other substances detrimental to roofing installation
           according to roofing system manufacturer's written instructions. Remove sharp projections.

      B.   Prevent materials from entering and clogging roof drains and conductors and from spilling or
           migrating onto surfaces of other construction. Remove roof-drain plugs when no work is taking
           place or when rain is forecast.

      C.   Complete terminations and base flashings and provide temporary seals to prevent water from
           entering completed sections of roofing system at the end of the workday or when rain is
           forecast. Remove and discard temporary seals before beginning work on adjoining roofing.

3.3        INSULATION INSTALLATION

      A.   Coordinate installing membrane roofing system components so insulation is not exposed to
           precipitation or left exposed at the end of the workday.

      B.   Comply with membrane roofing system manufacturer's written instructions for installing roof
           insulation.

      C.   Install one or more layers of insulation under area of roofing to achieve required thickness.
           Where overall insulation thickness is 2 inches or greater, install 2 or more layers with joints of
           each succeeding layer staggered from joints of previous layer a minimum of 6 inches (150 mm)
           in each direction.

      D.   Trim surface of insulation where necessary at roof drains so completed surface is flush and does
           not restrict flow of water.

      E.   Install insulation with long joints of insulation in a continuous straight line with end joints
           staggered between rows, abutting edges and ends between boards. Fill gaps exceeding 1/4 inch
           (6 mm) with insulation.

           1.    Cut and fit insulation within 1/4 inch (6 mm) of nailers, projections, and penetrations.

      F.   Mechanically Fastened and Adhered Insulation: Install each layer of insulation and secure first
           layer of insulation to deck using mechanical fasteners specifically designed and sized for
           fastening specified board-type roof insulation to deck type.

           1.    Fasten first layer of insulation according to requirements in FMG's "Approval Guide" for
                 specified Windstorm Resistance Classification.



EPDM MEMBRANE ROOFING                                                                               07550- 7
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           2.    Fasten first layer of insulation to resist uplift pressure at corners, perimeter, and field of
                 roof.
           3.    Install subsequent layers of insulation in a solid mopping of hot roofing asphalt, applied
                 within plus or minus 25 deg F (14 deg C) of equiviscous temperature.
           4.    Install subsequent layers of insulation in a manufacturer’s approved low-rise foam
                 adhesive. Edit this section per project requirements.

      G.   Install cover boards over insulation with long joints in continuous straight lines with end joints
           staggered between rows. Loosely butt cover boards together and fasten to roof deck.

           1.    Fasten insulation according to requirements in FMG's "Approval Guide" for specified
                 Windstorm Resistance Classification.
           2.    Fasten insulation to resist uplift pressure at corners, perimeter, and field of roof.

3.4        ADHERED ROOFING MEMBRANE INSTALLATION

      A.   Install EPDM roofing membrane over area to receive roofing according to membrane roofing
           system manufacturer's written instructions. Unroll roofing membrane and allow to relax before
           installing.

      B.   Start installation of roofing membrane in presence of membrane roofing system manufacturer's
           technical personnel.

      C.   Accurately align roofing membrane and maintain uniform side and end laps of minimum
           dimensions required by manufacturer. Stagger end laps.

      D.   Bonding Adhesive: Apply bonding adhesive to substrate and underside of roofing membrane at
           rate required by manufacturer and allow to partially dry before installing roofing membrane.
           Do not apply bonding adhesive to splice area of roofing membrane.

      E.   Mechanically or adhesively fasten roofing membrane securely at terminations, penetrations, and
           perimeter of roofing.

      F.   Apply roofing membrane with side laps shingled with slope of roof deck where possible.

      G.   Tape Seam Installation: Clean and prime both faces of splice areas, apply splice tape, and
           firmly roll side and end laps of overlapping roofing membranes according to manufacturer's
           written instructions to ensure a watertight seam installation. Apply lap sealant and seal exposed
           edges of roofing membrane terminations.

      H.   Repair tears, voids, and lapped seams in roofing that does not meet requirements.

      I.   Spread sealant or mastic bed over deck drain flange at deck drains and securely seal roofing
           membrane in place with clamping ring.

      J.   Install roofing membrane and auxiliary materials to tie in to existing roofing.

3.5        BASE FLASHING INSTALLATION

      A.   Install sheet flashings and preformed flashing accessories and adhere to substrates according to
           membrane roofing system manufacturer's written instructions.

      B.   Apply bonding adhesive to substrate and underside of sheet flashing at required rate and allow
           to partially dry. Do not apply bonding adhesive to seam area of flashing.


EPDM MEMBRANE ROOFING                                                                                07550- 8
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      C.   Flash penetrations and field-formed inside and outside corners with cured or uncured sheet
           flashing.

      D.   Clean splice areas, apply splicing cement, and firmly roll side and end laps of overlapping
           sheets to ensure a watertight seam installation. Apply lap sealant and seal exposed edges of
           sheet flashing terminations.

      E.   Terminate and seal top of sheet flashings and mechanically anchor to substrate through
           termination bars.

3.6        WALKWAY INSTALLATION

      A.   Flexible Walkways: Install walkway products in locations indicated. Adhere walkway
           products to substrate with compatible adhesive according to roofing system manufacturer's
           written instructions.

3.7        FIELD QUALITY CONTROL

      A.   Final Roof Inspection: Arrange for roofing system manufacturer's technical personnel to
           inspect roofing installation on completion and submit report to Architect.

           1.    Notify Architect or Owner 48 hours in advance of date and time of inspection.

      B.   Repair or remove and replace components of membrane roofing system where test results or
           inspections indicate that they do not comply with specified requirements.

      C.   Additional testing and inspecting, at Contractor's expense, will be performed to determine
           compliance of replaced or additional work with specified requirements.

3.8        PROTECTING AND CLEANING

      A.   Protect membrane roofing system from damage and wear during remainder of construction
           period. When remaining construction will not affect or endanger roofing, inspect roofing for
           deterioration and damage, describing its nature and extent in a written report, with copies to
           Architect and Owner.

      B.   Correct deficiencies in or remove membrane roofing system that does not comply with
           requirements, repair substrates and repair or reinstall membrane roofing system to a condition
           free of damage and deterioration at time of Substantial Completion and according to warranty
           requirements.

      C.   Clean overspray and spillage from adjacent construction using cleaning agents and procedures
           recommended by manufacturer of affected construction.

3.9        ROOFING INSTALLER'S WARRANTY

      A.   WHEREAS <Insert name> of <Insert address>, herein called the "Roofing Installer," has
           performed roofing and associated work ("work") on the following project:

           1.    Owner: <Insert name of Owner.>
           2.    Address: <Insert address.>
           3.    Building Name/Type: <Insert information.>
           4.    Address: <Insert address.>
           5.    Area of Work: <Insert information.>


EPDM MEMBRANE ROOFING                                                                            07550- 9
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           6.    Acceptance Date: <Insert date.>
           7.    Warranty Period: <Insert time.>
           8.    Expiration Date: <Insert date.>

   B.      AND WHEREAS Roofing Installer has contracted (either directly with Owner or indirectly as a
           subcontractor) to warrant said work against leaks and faulty or defective materials and
           workmanship for designated Warranty Period,

   C.      NOW THEREFORE Roofing Installer hereby warrants, subject to terms and conditions herein
           set forth, that during Warranty Period he will, at his own cost and expense, make or cause to be
           made such repairs to or replacements of said work as are necessary to correct faulty and
           defective work and as are necessary to maintain said work in a watertight condition.

   D.      This Warranty is made subject to the following terms and conditions:

           1.    Specifically excluded from this Warranty are damages to work and other parts of the
                 building, and to building contents, caused by:

                 a.     lightning;
                 b.     peak gust wind speed exceeding 72 mph;
                 c.     fire;
                 d.     failure of roofing system substrate, including cracking, settlement, excessive
                        deflection, deterioration, and decomposition;
                 e.     faulty construction of parapet walls, copings, chimneys, skylights, vents,
                        equipment supports, and other edge conditions and penetrations of the work;
                 f.     vapor condensation on bottom of roofing; and
                 g.     activity on roofing by others, including construction contractors, maintenance
                        personnel, other persons, and animals, whether authorized or unauthorized by
                        Owner.

           2.    When work has been damaged by any of foregoing causes, Warranty shall be null and
                 void until such damage has been repaired by Roofing Installer and until cost and expense
                 thereof have been paid by Owner or by another responsible party so designated.
           3.    Roofing Installer is responsible for damage to work covered by this Warranty but is not
                 liable for consequential damages to building or building contents resulting from leaks or
                 faults or defects of work.
           4.    During Warranty Period, if Owner allows alteration of work by anyone other than
                 Roofing Installer, including cutting, patching, and maintenance in connection with
                 penetrations, attachment of other work, and positioning of anything on roof, this
                 Warranty shall become null and void on date of said alterations, but only to the extent
                 said alterations affect work covered by this Warranty. If Owner engages Roofing
                 Installer to perform said alterations, Warranty shall not become null and void unless
                 Roofing Installer, before starting said work, shall have notified Owner in writing,
                 showing reasonable cause for claim, that said alterations would likely damage or
                 deteriorate work, thereby reasonably justifying a limitation or termination of this
                 Warranty.
           5.    During Warranty Period, if original use of roof is changed and it becomes used for, but
                 was not originally specified for, a promenade, work deck, spray-cooled surface, flooded
                 basin, or other use or service more severe than originally specified, this Warranty shall
                 become null and void on date of said change, but only to the extent said change affects
                 work covered by this Warranty.
           6.    Owner shall promptly notify Roofing Installer of observed, known, or suspected leaks,
                 defects, or deterioration and shall afford reasonable opportunity for Roofing Installer to
                 inspect work and to examine evidence of such leaks, defects, or deterioration.

EPDM MEMBRANE ROOFING                                                                           07550- 10
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           7.   This Warranty is recognized to be the only warranty of Roofing Installer on said work
                and shall not operate to restrict or cut off Owner from other remedies and resources
                lawfully available to Owner in cases of roofing failure. Specifically, this Warranty shall
                not operate to relieve Roofing Installer of responsibility for performance of original work
                according to requirements of the Contract Documents, regardless of whether Contract
                was a contract directly with Owner or a subcontract with Owner's General Contractor.

   E.      IN WITNESS THEREOF, this instrument has been duly executed this <Insert day> day of
           <Insert month>, <Insert year>.

           1.   Authorized Signature: <Insert signature.>
           2.   Name: <Insert name.>
           3.   Title: <Insert title.>

END OF SECTION 07550




EPDM MEMBRANE ROOFING                                                                           07550- 11
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EPDM MEMBRANE ROOFING                            07550- 12
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SECTION 07550 - TPO MEMBRANE ROOFING (ALTERNATE #2)
PART 1 GENERAL
1.01 SUMMARY
     A. Furnish and install elastomeric sheet roofing system, including:
        1. Roofing manufacturer's requirements for the specified warranty.
        2. Removal of entire existing roof membrane and flashings.
        3. Removal of wet areas of existing insulation down to the deck.
        4. Preparation of roofing substrates.
        5. Wood nailers for roofing attachment.
        6. Elastomeric membrane roofing.
        7. Flashings.
        8. Other roofing-related items specified or indicated on the drawings or otherwise necessary
            to provide a complete weatherproof roofing system.
     B. Disposal of demolition debris and construction waste is the responsibility of bidding. Perform
        disposal in manner complying with all applicable federal, state, and local regulations.
     C. Comply with the published recommendations and instructions of the roofing membrane
        manufacturer, at http://manual.fsbp.com.
     D. Commencement of work by the Contractor shall constitute acknowledgement by the Contractor
        that this specification can be satisfactorily executed, under the project conditions and with all
        necessary prerequisites for warranty acceptance by roofing membrane manufacturer. No
        modification of the Contract Sum will be made for failure to adequately examine the Contract
        Documents or the project conditions.
1.02 REFERENCES
     A. Referenced Standards: These standards form part of this specification only to the extent they
        are referenced as specification requirements.
     B. ASTM C 1549 - Standard Test Method for Determination of Solar Reflectance Near Ambient
        Temperature Using a Portable Solar Reflectometer; 2004.
     C. ASTM D 638 - Standard Test Method for Tensile Properties of Plastics; 2003.
     D. ASTM D 1004 - Standard Test Method for Initial Tear Resistance of Plastic Film and Sheeting;
        2003.
     E.    ASTM D 6878 - Standard Specification for Thermoplastic Polyolefin Based Sheet Roofing;
           2003.
     F.    FM 1-28 - Design Wind Loads; Factory Mutual System; 2002.
     G. FM 1-29 - Roof Deck Securement and Above Deck Roof Components; Factory Mutual System;
        2005.
1.03 SUBMITTALS
     A. Product Data:
         Provide membrane manufacturer's printed data sufficient to show that all components of
         roofing system, including insulation and fasteners, comply with the specified requirements
         and with the membrane manufacturer's requirements and recommendations for the system
TPO MEMBRANE ROOFING (ALTERNATE #2)                                                         07550- 1
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                type specified; include data for each product used in conjunction with roofing membrane.

           2.   Where UL or FM requirements are specified, provide documentation that shows that the
                roofing system to be installed is UL-Classified or FM-approved, as applicable; include data
                itemizing the components of the classified or approved system.
     B. Samples: Submit samples of at least the following:
        1. Sample of roof membrane.
        2. Sample of each insulation type.
     C. Shop Drawings: Provide:
        1. The roof membrane manufacturer's standard details customized for this project for all
            relevant conditions, including flashings, base tie-ins, roof edges, terminations, expansion
            joints, penetrations, and drains.
     D. Pre-Installation Notice: Copy to show that manufacturer's required Pre Installation Notice
        (PIN) has been accepted and approved by the manufacturer.
1.04 QUALITY ASSURANCE
     A. Applicator Qualifications: Roofing installer shall have the following:
        1. Current Firestone Red Shield Licensed Contractor status.
        2. Fully staffed office within 100 miles of the job site.
        3. At least five years experience in installing specified system.
        4. Capability to provide payment and performance bond to building owner.
     B. Pre-Installation Conference: Before start of roofing work, bidding shall hold a meeting to
        discuss the proper installation of materials and requirements to achieve the warranty.
        1. Require attendance with all parties directly influencing the quality of roofing work or
             affected by the performance of roofing work.
        2. Notify Connell Architecture well in advance of meeting.
1.05 DELIVERY, STORAGE AND HANDLING
     A. Deliver products in manufacturer's original containers, dry and undamaged, with seals and
        labels intact and legible.
     B. Store materials clear of ground and moisture with weather protective covering.
     C. Keep combustible materials away from ignition sources.
1.06 WARRANTY
     A. Comply with all warranty procedures required by manufacturer, including notifications,
        scheduling, and inspections.
     B. Warranty: Firestone 20 year Red Shield Limited Warranty covering membrane, roof insulation,
        and membrane accessories.
        1. Limit of Liability: No dollar limitation.
        2. Scope of Coverage: Repair leaks in the roofing system caused by:
            a. Ordinary wear and tear of the elements.
            b. Manufacturing defect in Firestone brand materials.
            c. Defective workmanship used to install these materials.
            d. Damage due to winds up to 55 mph (88 km/h).
        3. Not Covered:
TPO MEMBRANE ROOFING (ALTERNATE #2)                                                               07550- 2
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               a.   Damage due to winds in excess of.
               b.   Damage due hurricanes or tornadoes.
               c.   Hail.
               d.   Intentional damage.
               e.   Unintentional damage due to normal rooftop inspections, maintenance, or service.
PART 2 PRODUCTS
2.01 MANUFACTURERS
      A. Acceptable Manufacturer - Roofing System: Firestone Building Products Co., Carmel, IN.
         www.firestonebpco.com.
         1. Roofing systems manufactured by others are acceptable provided the roofing system is
             completely equivalent in materials and warranty conditions and the manufacturer meets the
             following qualifications:
             a. Specializing in manufacturing the roofing system to be provided.
             b. Minimum ten years of experience manufacturing the roofing system to be provided.
             c. Able to provide a no dollar limit, single source roof system warranty that is backed by
                  corporate assets in excess of one billion dollars.
             d. ISO 9002 certified.
             e. Able to provide isocyanurate insulation that is produced in own facilities.
             f. Roofing systems manufactured by the companies listed below are acceptable provided
                  they are completely equivalent in materials and warranty conditions:
                  1) Carlisle
                  2) Sarnafil .
     B. Manufacturer of Insulation and Cover Boards: Same manufacturer as roof membrane.
     C. Manufacturer of Metal Roof Edging: Same manufacturer as roof membrane.
        1. Metal roof edging products by other manufacturers are not acceptable.
     D. Substitution Procedures: See Instructions to Bidders.
        1. Submit evidence that the proposed substitution complies with the specified requirements.
2.02 ROOFING SYSTEM DESCRIPTION
     A. Roofing System:
        1. Membrane: Thermoplastic olefin (TPO).
        2. Thickness: As specified elsewhere.
        3. Membrane Attachment: Fully adhered.
        4. Comply with applicable local building code requirements.
        5. Provide assembly having Underwriters Laboratories, Inc. (UL) Class A Fire Hazard
            Classification.
        6. Provide assembly complying with Factory Mutual Corporation (FM) Roof Assembly
            Classification, FM DS 1-28 and 1-29, and meeting minimum requirements of FM 1-90
            wind uplift rating.
     B. Insulation:
        1. Total R Value: ___, minimum.
2.03 TPO MEMBRANE MATERIALS
     A. Membrane: Flexible, heat weldable sheet composed of thermoplastic polyolefin polymer and
        ethylene propylene rubber; complying with ASTM D 6878, with polyester weft inserted
TPO MEMBRANE ROOFING (ALTERNATE #2)                                                            07550- 3
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           reinforcement and the following additional characteristics:
           1. Thickness: 0.060 inch (1.52 mm) plus/minus 10 percent, with coating thickness over
                reinforcement of 0.024 inch (0.61 mm) plus/minus 10 percent.
           2. Sheet Width: Provide the widest available sheets to minimize field seaming.
           3. Puncture Resistance: 265 lbf (1174 N), minimum, when tested in accordance FTM 101C
                Method 2031.
           4. Solar Reflectance: 0.79, minimum, when tested in accordance with ASTM C 1549.
           5. Color: White.
           6. Acceptable Product: ULTRAPLY TPO by Firestone.
     B. Membrane Fasteners: Type and size as required by roof membrane manufacturer for roofing
        system and warranty to be provided; use only fasteners furnished by roof membrane
        manufacturer.
     C. Curb and Parapet Flashing: Same material as membrane, with encapsulated edge which
        eliminates need for seam sealing the flashing-to-roof splice; precut to 18 inches (457 mm) wide.
     D. Formable Flashing: Non-reinforced, flexible, heat weldable sheet, composed of thermoplastic
        polyolefin polymer and ethylene propylene rubber.
        1. Thickness: 0.060 inch (1.52 mm) plus/minus 10 percent.
        2. Tensile Strength: 1550 psi (10.7 MPa), minimum, when tested in accordance with ASTM
            D 638 after heat aging.
        3. Elongation at Break: 650 percent, minimum, when tested in accordance with ASTM D 638
            after heat aging.
        4. Tearing Strength: 12 lbf (53 N), minimum, when tested in accordance with ASTM D 1004
            after heat aging.
        5. Color: White.
        6. Acceptable Product: ULTRAPLY TPO Flashing by Firestone.
     E.    Tape Flashing: 5-1/2 inch (140 mm) nominal wide TPO membrane laminated to cured rubber
           polymer seaming tape, overall thickness 0.065 inch (1.6 mm) nominal; TPO QuickSeam
           Flashing by Firestone.
     F.    Bonding Adhesive: Neoprene and SBR rubber blend, formulated for compatibility with the
           membrane other substrate materials, including masonry, wood, and insulation facings;
           ULTRAPLY Bonding Adhesive by Firestone.
     G. Pourable Sealer: Two-part polyurethane, two-color for reliable mixing; Pourable Sealer by
        Firestone.
     H. Seam Plates: Steel with barbs and Galvalume coating; corrosion-resistance complying with FM
        4470.
     I.    Termination Bars: Aluminum bars with integral caulk ledge; 1.3 inches (33 mm) wide by 0.10
           inch (2.5 mm) thick; Firestone Termination Bar by Firestone.
     J.    Cut Edge Sealant: Synthetic rubber-based, for use where membrane reinforcement is exposed;
           UltraPly TPO Cut Edge Sealant by Firestone.
     K. General Purpose Sealant: EPDM-based, one part, white general purpose sealant; UltraPly TPO
        General Purpose Sealant by Firestone.
     L.    Molded Flashing Accessories: Unreinforced TPO membrane pre-molded to suit a variety of
           flashing details, including pipe boots, inside corners, outside corners, etc.; UltraPly TPO Small
TPO MEMBRANE ROOFING (ALTERNATE #2)                                                                 07550- 4
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           and Large Pipe Flashing by Firestone.
2.04 ACCESSORY MATERIALS
     A. Wood Nailers: PS 20 dimension lumber, Structural Grade No. 2 or better Southern Pine,
        Douglas Fir; or PS 1, APA Exterior Grade plywood; pressure preservative treated.
        1. Width: 3-1/2 inches (90 mm), nominal minimum, or as wide as the nailing flange of the
            roof accessory to be attached to it.
        2. Thickness: Same as thickness of roof insulation.

PART 3 INSTALLATION
3.01 GENERAL
     A. Install roofing, insulation, flashings, and accessories in accordance with roofing manufacturer's
        published instructions and recommendations for the specified roofing system. Where
        manufacturer provides no instructions or recommendations, follow good roofing practices and
        industry standards. Comply with federal, state, and local regulations.
     B. Obtain all relevant instructions and maintain copies at project site for duration of installation
        period.
     C. Do not start work until Pre-Installation Notice has been submitted to manufacturer as
        notification that this project requires a manufacturer's warranty.
     D. Perform work using competent and properly equipped personnel.
     E.    Temporary closures, which ensure that moisture does not damage any completed section of the
           new roofing system, are the responsibility of the applicator. Completion of flashings,
           terminations, and temporary closures shall be completed as required to provide a watertight
           condition.
     F.    Install roofing membrane only when surfaces are clean, dry, smooth and free of snow or ice; do
           not apply roofing membrane during inclement weather or when ambient conditions will not
           allow proper application; consult manufacturer for recommended procedures during cold
           weather. Do not work with sealants and adhesives when material temperature is outside the
           range of 60 to 80 degrees F (15 to 25 degrees C).
     G. Protect adjacent construction, property, vehicles, and persons from damage related to roofing
        work; repair or restore damage caused by roofing work.
        1. Protect from spills and overspray from bitumen, adhesives, sealants and coatings.
        2. Particularly protect metal, glass, plastic, and painted surfaces from bitumen, adhesives, and
             sealants within the range of wind-borne overspray.
        3. Protect finished areas of the roofing system from roofing related work traffic and traffic by
             other trades.
     H. Until ready for use, keep materials in their original containers as labeled by the manufacturer.
     I.    Consult membrane manufacturer's instructions, container labels, and Material Safety Data
           Sheets (MSDS) for specific safety instructions. Keep all adhesives, sealants, primers and
           cleaning materials away from all sources of ignition.
3.02 EXAMINATION
   A. Examine roof deck to determine that it is sufficiently rigid to support installers and their
TPO MEMBRANE ROOFING (ALTERNATE #2)                                                               07550- 5
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           mechanical equipment and that deflection will not strain or rupture roof components or deform
           deck.
     B. Verify that surfaces and site conditions are ready to receive work. Correct defects in the
        substrate before commencing with roofing work.
     C. Examine roof substrate to verify that it is properly sloped to drains.
     D. Verify that the specifications and drawing details are workable and not in conflict with the
        roofing manufacturer's recommendations and instructions; start of work constitutes acceptable
        of project conditions and requirements.
3.03 PREPARATION
     A. Take appropriate measures to ensure that fumes from adhesive solvents are not drawn into the
        building through air intakes.
     B. Prior to proceeding, prepare roof surface so that it is clean, dry, and smooth, and free of sharp
        edges, fins, roughened surfaces, loose or foreign materials, oil, grease and other materials that
        may damage the membrane.
     C. Fill all surface voids in the immediate substrate that are greater than 1/4 inch (6 mm) wide with
        fill material acceptable insulation to membrane manufacturer.
     D. Seal, grout, or tape deck joints, where needed, to prevent bitumen seepage into building.
3.04 SINGLE-PLY MEMBRANE INSTALLATION
     A. Beginning at low point of roof, place membrane without stretching over substrate and allow to
        relax at least 30 minutes before attachment or splicing; in colder weather allow for longer relax
        time.
     B. Lay out the membrane pieces so that field and flashing splices are installed to shed water.
     C. Install membrane without wrinkles and without gaps or fishmouths in seams; bond and test
        seams and laps in accordance with membrane manufacturer's instructions and details.
     D. Install membrane adhered to the substrate, with edge securement as specified.
     E.    Adhered Membrane: Bond membrane sheet to substrate using membrane manufacturer's
           recommended bonding material, application rate, and procedures.
     F.    Edge Securement: Secure membrane at all locations where membrane terminates or goes
           through an angle change greater than 2 in 12 inches (1:6 ) using mechanically fastened
           reinforced perimeter fastening strips, plates, or metal edging as indicated or as recommended by
           roofing manufacturer.
           1. Exceptions: Round pipe penetrations less than 18 inches (460 mm) in diameter and square
                penetrations less than 4 inches (200 mm) square.
3.05 FLASHING AND ACCESSORIES INSTALLATION
     A. Install flashings, including laps, splices, joints, bonding, adhesion, and attachment, as required
        by membrane manufacturer's recommendations and details.
3.06 FINISHING AND WALKWAY INSTALLATION
   A. Install walkways at access points to the roof, around rooftop equipment that may require
      maintenance, and where indicated on the drawings.
TPO MEMBRANE ROOFING (ALTERNATE #2)                                                          07550- 6
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3.07 FIELD QUALITY CONTROL
     A. Inspection by Manufacturer: Provide final inspection of the roofing system by a Technical
        Representative employed by roofing system manufacturer specifically to inspect installation for
        warranty purposes (i.e. not a sales person).
     B. Perform all corrections necessary for issuance of warranty.
3.08 CLEANING
     A. Clean all contaminants generated by roofing work from building and surrounding areas,
        including bitumen, adhesives, sealants, and coatings.
     B. Repair or replace building components and finished surfaces damaged or defaced due to the
        work of this section; comply with recommendations of manufacturers of components and
        surfaces.
     C. Remove leftover materials, trash, debris, equipment from project site and surrounding areas.
3.09 PROTECTION
     A. Where construction traffic must continue over finished roof membrane, provide durable
        protection and replace or repair damaged roofing to original condition.

                                         END OF SECTION




TPO MEMBRANE ROOFING (ALTERNATE #2)                                                            07550- 7
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SECTION 07620 - SHEET METAL FLASHING AND TRIM

PART 1 - GENERAL

1.1        RELATED DOCUMENTS

      A.   Drawings and general provisions of the Contract, including General and Supplementary
           Conditions and Division 1 Specification Sections, apply to this Section.

1.2        SUMMARY

      A.   This Section includes the following sheet metal flashing and trim:

           1.    Formed low-slope roof flashing and trim.

           2.    Formed coping and trim.

1.3        PERFORMANCE REQUIREMENTS

      A.   General: Install sheet metal flashing and trim to withstand wind loads, structural movement,
           thermally induced movement, and exposure to weather without failing, rattling, leaking, and
           fastener disengagement.

      B.   Fabricate and install copings capable of resisting the following forces according to
           recommendations in FMG Loss Prevention Data Sheet 1-49:

           1.    Wind Zone 1: For velocity pressures of 21 to 30 lbf / sq. ft.: 60-lbf / sq. ft. = perimeter
                 uplift force, 90-lbf / sq. ft. corner uplift force, and 30-lbf / sq. ft. outward force.

      C.   Thermal Movements: Provide sheet metal flashing and trim that allow for thermal movements
           resulting from the following maximum change (range) in ambient and surface temperatures by
           preventing buckling, opening of joints, hole elongation, overstressing of components, failure of
           joint sealants, failure of connections, and other detrimental effects. Provide clips that resist
           rotation and avoid shear stress as a result of sheet metal and trim thermal movements. Base
           engineering calculation on surface temperatures of materials due to both solar heat gain and
           nighttime-sky heat loss.

           1.    Temperature Change (Range): 120 deg F, ambient; 180 deg F, material surfaces.

      D.   Water Infiltration: Provide sheet metal flashing and trim that do not allow water infiltration to
           building interior.

1.4        SUBMITTALS

      A.   Product Data: For each type of product indicated. Include construction details, material
           descriptions, dimensions of individual components and profiles, and finishes.

      B.   Shop Drawings: Show layouts of sheet metal flashing and trim, including plans and elevations.
           Distinguish between shop- and field-assembled work. Include the following:

           1.    Identify material, thickness, weight, and finish for each item and location in Project.

           2.    Details for forming sheet metal flashing and trim, including profiles, shapes, seams, and
                 dimensions.

SHEET METAL FLASHING AND TRIM                                                                       07620- 1
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           3.    Details for fastening, joining, supporting, and anchoring sheet metal flashing and trim,
                 including fasteners, clips, cleats, and attachments to adjoining work.

           4.    Details of expansion-joint covers, including showing direction of expansion and
                 contraction.

      C.   Samples for Initial Selection: For each type of sheet metal flashing and trim indicated with
           factory-applied color finishes.

           1.    Include similar Samples of trim and accessories involving color selection.

1.5        QUALITY ASSURANCE

      A.   Sheet Metal Flashing and Trim Standard: Comply with SMACNA's "Architectural Sheet Metal
           Manual." Conform to dimensions and profiles shown unless more stringent requirements are
           indicated.

      B.   Installer Qualifications: Engage an experienced Installer who has completed sheet metal
           flashing and trim work similar in material, design, and extent to that indicated for this Project
           and with a record of successful in-service performance.

1.6        DELIVERY, STORAGE, AND HANDLING

      A.   Deliver sheet metal flashing materials and fabrications undamaged. Protect sheet metal flashing
           and trim materials and fabrications during transportation and handling.

      B.   Unload, store, and install sheet metal flashing materials and fabrications in a manner to prevent
           bending, warping, twisting, and surface damage.

      C.   Stack materials on platforms or pallets, covered with suitable weathertight and ventilated
           covering. Do not store sheet metal flashing and trim materials in contact with other materials
           that might cause staining, denting, or other surface damage.

1.7        COORDINATION

      A.   Coordinate installation of sheet metal flashing and trim with interfacing and adjoining
           construction to provide a leakproof, secure, and noncorrosive installation.

      B.   Coordinate Work of this Section with interfacing and adjoining Work for proper sequencing of
           each installation. Ensure best possible weather resistance, durability of Work, and protection of
           materials and finishes.

PART 2 - PRODUCTS

2.1        MANUFACTURERS

      A.   In other Part 2 articles where titles below introduce lists, the following requirements apply to
           product selection:

           1.    Available Manufacturers: Subject to compliance with requirements, manufacturers
                 offering products that may be incorporated into the Work include, but are not limited to,
                 manufacturers specified.



SHEET METAL FLASHING AND TRIM                                                                     07620- 2
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2.2        SHEET METALS

      A.   Aluminum-Zinc Alloy-Coated Steel Sheet (Galvalume): For unexposed flashings, cleats, clips,
           etc., ASTM A 792/A 792M, Class AZ50 coating designation, Grade 40; structural quality with
           manufacturer's standard clear acrylic coating both sides.

      B.   Steel Sheet: ASTM A 240/A 240M, Type 304.

                 a.      1.       Aluminum-Zinc Alloy-Coated Steel: 0.0276 inch thick.

      C.   Organic Coating Finish: Apply the following system by coil-coating process on galvalume steel
           sheet as recommended by coating manufacturers and applicator.

           1.    Fluoropolymer 2-Coat Coating System: Manufacturer's standard 2-coat, thermocured
                 system composed of specially formulated inhibitive primer and fluoropolymer color
                 topcoat containing not less than 70 percent polyvinylidene fluoride resin by weight;
                 complying with AAMA 605.2.

                 a.     Color and Gloss: As selected by Architect from manufacturer's full range of
                        choices for color and gloss.
                 b.     Resin Manufacturers:       Subject to compliance with requirements, provide
                        fluoropolymer coating systems containing resins produced by one of the following
                        manufacturers:

                        1)    Ausimont USA, Inc. (Hylar 5000)
                        2)    Elf Atochem North America, Inc. (Kynar 500)
                        3)    An Acceptable Substitution which meets the requirements of these
                              specifications per the two manufacturers listed above.

           2.    Coil-Coated Steel Sheet Manufacturers: Subject to compliance with requirements,
                 manufacturers offering products that may be incorporated in the Work include, but are
                 not limited to, the following:

                 a.     Atlas Aluminum Corporation.
                 b.     Berridge Manufacturing Company.
                 c.     Firestone Una-Clad.
                 d.     Copper Sales, Inc.
                 e.     MM Systems Corporation.
                 f.     Petersen Aluminum Corporation.
                 g.     Vincent Metals.

      D.   Shop Finish, Rain Drainage: Provide manufacturer's standard baked-on, acrylic shop finish on
           sheet metal flashing and trim; 1.0-mil dry film thickness. Color as selected by Architect from
           manufacturer’s full range of choices for color and gloss.

2.3        MISCELLANEOUS MATERIALS

      A.   General: Provide materials and types of fasteners, solder, welding rods, protective coatings,
           separators, sealants, and other miscellaneous items as required for complete sheet metal flashing
           and trim installation.

      B.   Fasteners: Wood screws, annular threaded nails, self-tapping screws, self-locking rivets and
           bolts, and other suitable fasteners designed to withstand design loads.


SHEET METAL FLASHING AND TRIM                                                                     07620- 3
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           1.    Exposed Fasteners: Heads matching color of sheet metal by means of plastic caps or
                 factory-applied coating.

           2.    Fasteners for Flashing and Trim: Blind fasteners or self-drilling screws, gasketed, with
                 hex washer head.

           3.    Blind Fasteners: High-strength aluminum or stainless-steel rivets.

      C.   Sealing Tape: Pressure-sensitive, 100 percent solids, polyisobutylene compound sealing tape
           with release-paper backing. Provide permanently elastic, nonsag, nontoxic, nonstaining tape.

      D.   Elastomeric Sealant: ASTM C 920, elastomeric polyurethane, polysulfide or silicone polymer
           sealant; of type, grade, class, and use classifications required to seal joints in sheet metal
           flashing and trim and remain watertight.

      E.   Butyl Sealant: ASTM C 1311, single-component, solvent-release butyl rubber sealant,
           polyisobutylene plasticized, heavy bodied for hooked-type expansion joints with limited
           movement.

      F.   Epoxy Seam Sealer:      2-part, noncorrosive, aluminum seam-cementing compound,
           recommended by aluminum manufacturer for exterior and interior nonmoving joints, including
           riveted joints.

      G.   Adhesives: Type recommended by flashing sheet metal manufacturer for waterproof and
           weather-resistant seaming and adhesive application of flashing sheet metal.

      H.   Metal Accessories: Provide sheet metal clips, straps, anchoring devices, and similar accessory
           units as required for installation of Work, matching or compatible with material being installed;
           noncorrosive; size and thickness required for performance.

2.4        FABRICATION, GENERAL

      A.   Sheet Metal Fabrication Standard: Fabricate sheet metal flashing and trim to comply with
           recommendations of SMACNA's "Architectural Sheet Metal Manual" that apply to the design,
           dimensions, metal, and other characteristics of the item indicated.

      B.   Comply with details shown to fabricate sheet metal flashing and trim that fit substrates and
           result in waterproof and weather-resistant performance once installed. Verify shapes and
           dimensions of surfaces to be covered before fabricating sheet metal.

      C.   Form exposed sheet metal Work that is without excessive oil canning, buckling, and tool marks
           and that is true to line and levels indicated, with exposed edges folded back to form hems.

      D.   Seams: Fabricate nonmoving seams in aluminum with flat-lock seams. Form seams and seal
           with epoxy seam sealer. Rivet joints for additional strength.

      E.   Expansion Provisions: Space movement joints at maximum of 10 feet with no joints allowed
           within 24 inches of corner or intersection. Where lapped or bayonet-type expansion provisions
           in Work cannot be used or would not be sufficiently weatherproof and waterproof, form
           expansion joints of intermeshing hooked flanges, not less than 1 inch deep, filled with mastic
           sealant (concealed within joints).

      F.   Sealed Joints: Form nonexpansion, but movable, joints in metal to accommodate elastomeric
           sealant to comply with SMACNA standards.

SHEET METAL FLASHING AND TRIM                                                                     07620- 4
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      G.   Separate metal from noncompatible metal or corrosive substrates by coating concealed surfaces
           at locations of contact with asphalt mastic or other permanent separation as recommended by
           manufacturer.

      H.   Conceal fasteners and expansion provisions where possible. Exposed fasteners are not allowed
           on faces of sheet metal exposed to public view.

      I.   Fabricate cleats and attachment devices from same material as sheet metal component being
           anchored or from compatible, noncorrosive metal recommended by sheet metal manufacturer.


           1.    Size: As recommended by SMACNA manual or sheet metal manufacturer for
                 application but never less than thickness of metal being secured.

2.5        FINISHES

      A.   Comply with NAAMM's "Metal Finishes Manual for Architectural and Metal Products" for
           recommendations for applying and designating finishes.

      B.   Protect mechanical and painted finishes on exposed surfaces from damage by applying a
           strippable, temporary protective covering before shipping.

      C.   Appearance of Finished Work: Variations in appearance of abutting or adjacent pieces are
           acceptable if they are within one-half of the range of approved Samples. Noticeable variations
           in the same piece are not acceptable. Variations in appearance of other components are
           acceptable if they are within the range of approved Samples and are assembled or installed to
           minimize contrast.

PART 3 - EXECUTION

3.1        EXAMINATION

      A.   Examine substrates, areas, and conditions, with Installer present, to verify actual locations,
           dimensions and other conditions affecting performance of work.

           1.    Verify that substrate is sound, dry, smooth, clean, sloped for drainage, and securely
                 anchored.

           2.    Proceed with installation only after unsatisfactory conditions have been corrected.

3.2        INSTALLATION, GENERAL

      A.   General: As otherwise indicated, install sheet metal flashing and trim to comply with
           performance requirements, manufacturer's installation instructions, and SMACNA's
           "Architectural Sheet Metal Manual." Anchor units of Work securely in place by methods
           indicated, providing for thermal expansion of metal units; conceal fasteners where possible, and
           set units true to line and level as indicated. Install Work with laps, joints, and seams that will be
           permanently watertight and weatherproof.

      B.   Anchor sheet metal flashing and trim and other components of the Work securely in place, with
           provisions for thermal and structural movement. Use fasteners, solder, welding rods, protective
           coatings, separators, sealants, and other miscellaneous items as required to complete sheet metal
           flashing and trim system.


SHEET METAL FLASHING AND TRIM                                                                         07620- 5
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           1.    Torch cutting of sheet metal flashing and trim is not permitted.

   C.      Metal Protection: Where dissimilar metals will contact each other or corrosive substrates,
           protect against galvanic action by painting contact surfaces with bituminous coating or by other
           permanent separation as recommended by fabricator or manufacturers of dissimilar metals.

           1.    Coat side of uncoated aluminum or stainless-steel sheet metal flashing and trim with
                 bituminous coating where flashing and trim will contact wood, ferrous metal, or
                 cementitious construction.

           2.    Underlayment: Where installing metal flashing directly on cementitious or wood
                 substrates, install a course of felt underlayment and cover with a slip sheet or install a
                 course of polyethylene underlayment.

           3.    Bed flanges in thick coat of asphalt roofing cement where required for waterproof
                 performance.

   D.      Install exposed sheet metal Work that is without excessive oil canning, buckling, and tool marks
           and that is true to line and levels indicated, with exposed edges folded back to form hems.
           Install sheet metal flashing and trim to fit substrates and to result in waterproof and weather-
           resistant performance. Verify shapes and dimensions of surfaces to be covered before
           fabricating sheet metal.

   E.      Install sheet metal flashing and trim true to line and levels indicated. Provide uniform, neat
           seams with minimum exposure of solder, welds, and elastomeric or butyl sealant.

   F.      Install sheet metal flashing and trim to fit substrates and to result in watertight performance.
           Verify shapes and dimensions of surfaces to be covered before fabricating sheet metal.

           1.    Space cleats not more than 12 inches apart. Anchor each cleat with two fasteners. Bend
                 tabs over fasteners.

   G.      Expansion Provisions: Provide for thermal expansion of exposed flashing and trim. Space
           movement joints at a maximum of 10 feet with no joints allowed within 24 inches of corner or
           intersection. Where lapped or bayonet-type expansion provisions cannot be used or would not
           be sufficiently watertight, form expansion joints of intermeshing hooked flanges, not less than 1
           inch deep, filled with elastomeric or butyl sealant concealed within joints.

   H.      Fasteners: Use fasteners of sizes that will penetrate substrate not less than 1-1/4 inches for nails
           and not less than 3/4 inch for wood screws.

           1.    Galvanized or Prepainted, Metallic-Coated Steel: Use stainless-steel fasteners.

           2.    Stainless Steel: Use stainless-steel fasteners.

   I.      Seal joints with elastomeric or butyl sealant as required for watertight construction.

           1.    Where sealant-filled joints are used, embed hooked flanges of joint members not less than
                 1 inch into sealant. Form joints to completely conceal sealant. When ambient
                 temperature at time of installation is moderate, between 40 and 70 deg F, set joint
                 members for 50 percent movement either way. Adjust setting proportionately for
                 installation at higher ambient temperatures. Do not install sealant-type joints at
                 temperatures below 40 deg F.


SHEET METAL FLASHING AND TRIM                                                                        07620- 6
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      J.   Soldered Joints:

           1.    Do not solder prepainted, metallic-coated steel sheet.

3.3        ROOF DRAINAGE SYSTEM INSTALLATION

      A.   General: Install sheet metal roof drainage items to produce complete roof drainage system
           according to SMACNA recommendations and as indicated. Coordinate installation of roof
           perimeter flashing with installation of roof drainage system.

      B.   Downspouts: Join sections with 1-1/2 inch telescoping joints. Provide 1-1/2 inch wide hangers
           designed to hold downspouts securely 1 inch away from walls; locate hangers 12” from top and
           bottom and at approximately 60 inches o.c. in between, and a minimum of three hangers per
           downspout.

           1.    Provide elbows at base of downspout to direct water away from building.

           2.    Provide concrete splashblocks at base of downspouts to direct water away from building
                 as indicated at locations where downspouts are not provided.

      C.   Conductor Heads: Anchor securely to wall with elevation of conductor head as indicated.

3.4        ROOF FLASHING INSTALLATION

      A.   General: Install sheet metal roof flashing and trim to comply with performance requirements,
           sheet metal manufacturer's written installation instructions and SMACNA's "Architectural Sheet
           Metal Manual." Provide concealed fasteners where possible, set units true to line, and level as
           indicated. Install work with laps, joints, and seams that will be permanently watertight.

      B.   Counterflashings: Coordinate installation of counterflashings with installation of assemblies to
           be protected by counterflashing. Lap counterflashing joints a minimum of 2 inches and bed
           with sealant.

3.5        CLEANING AND PROTECTION

      A.   Clean exposed metal surfaces of substances that interfere with uniform oxidation and
           weathering.

      B.   Clean and neutralize flux materials. Clean off excess solder and sealants.

      C.   Remove temporary protective coverings and strippable films as sheet metal flashing and trim
           are installed. On completion of installation, clean finished surfaces, including removing unused
           fasteners, metal filings, pop rivet stems, and pieces of flashing. Maintain in a clean condition
           during construction.

      D.   Replace sheet metal flashing and trim that have been damaged or that have deteriorated beyond
           successful repair by finish touchup or similar minor repair procedures.

      E.   Provide final protection and maintain conditions that ensure sheet metal flashing and trim Work
           during construction is without damage or deterioration other than natural weathering at the time
           of Substantial Completion.

END OF SECTION 07620


SHEET METAL FLASHING AND TRIM                                                                     07620- 7
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                   THIS PAGE INTENTIONALLY BLANK




SHEET METAL FLASHING AND TRIM                      07620- 8
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SECTION 07920 - JOINT SEALANTS


PART 1: GENERAL

1.1            RELATED DOCUMENTS

      A.       Drawings and general provisions of the Contract, including General and Supplementary Con-
               ditions and other Division 1 Specification Sections, apply to this Section.

1.2            DESCRIPTION OF WORK

      A.       Furnish all labor, material, plant and services required to complete caulking and sealing and
               as necessary to make building completely watertight.

      B.       Refer to drawings for particular items requiring caulking and sealant, but joints requiring
               caulking and sealants shall not be limited to those shown on drawings.

1.3            RELATED WORK

      A.       All in-seam sealant, lap sealant, splicing cement, and cut-off mastic shall be provided by roof
               membrane manufacturer or approved for compatibility with roofing membrane.

1.4            QUALITY ASSURANCE

      A.       Basis of Specification:

               1.      Pecora Corporation

      B.       Acceptable Manufacturers:

               1.      Sonneborn, Division of Contech, Inc.
               2.      Tremco Manufacturing Company
               3.      W. R. Grace & Company
               4.      or acceptable substitution.

      C.       Standards:

               1.      Related Standards: Provide work in accordance with applicable standards specified
                       and product manufacturer's specifications for materials and workmanship unless Pro-
                       ject Documents require conformance with more stringent requirements. Provide the
                       most stringent requirements.


      D.       Quality Control:

               1.      Seal sample areas in project as directed by Owner's Representative for each type of
                       sealant required, in accordance with project requirements and colors selected, and ob-
                       tain Architect's approval for appearance before proceeding.

JOINT SEALANTS                                                                                       07920 - 1
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1.5            SUBMITTALS

      A.       Product Data:
               1.      Submit two copies of manufacturer's specifications and installation instructions for
                       each type material required and proposed for use. Include description of material,
                       physical properties and limitations for use of such materials. Include information re-
                       garding the need for and use of primers with sealants proposed, and time limit in
                       which material must be used after date of manufacturing.

      B.       Guarantee:

               1.      Submit written guarantee signed jointly by Sealant Installer and General Contractor
                       agreeing that all caulking and sealant work will be free of defective material and
                       workmanship for a period of three (3) years from date of Certificate of Substantial
                       Completion for project, and that defective work, if any, occurring during guarantee
                       period will be corrected at no additional cost to Owner.
               2.      Submit written guarantee to Owner, through Owner's Representative prior to final ac-
                       ceptance of project work by Owner.

1.6            DELIVERY, STORAGE AND HANDLING

      A.       Sealant Contractor shall cooperate with Owner's Representative in delivery and storage of his
               equipment on Project. Equipment shall be handled by qualified and experienced worker.

      B.       Products shall be delivered in original cartons or containers bearing original labels, and shall
               be delivered, stored and handled to prevent damage of any nature and as recommended by
               manufacturer.

      C.       Deliver sealant materials in sealed containers with date of manufacture clearly shown on each
               package. Store materials in cool, dry, covered or shaded area, assigned exclusively to this
               Contractor. Packages and containers showing evidence of contamination due to damage shall
               be removed from Project Site immediately and replaced with fresh, damage-free material.
               Materials containing flammable and volatile solvents shall be kept away from heat, sparks
               and flame. Proper safety precautions must be taken in storage and application.


PART 2: PRODUCTS

2.1            SEALANT MATERIALS

      A.       Type A Sealant: Two-component, modified polyurethane sealant, nonsag type, conforming
               to Federal Specification TT-S-277 E - Type II and ANSI All6.l; Pecora "Dynatrol II".

      B.       Sealant colors as selected by Architect from standard available colors.

2.2            JOINT-SEALANT BACKING




JOINT SEALANTS                                                                                        07920 - 2
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      A.       General: Provide sealant backings of material and type that are nonstaining; are compatible
               with joint substrates, sealants, primers, and other joint fillers; and are approved for
               applications indicated by sealant manufacturer based on field experience and laboratory
               testing.

      B.       Elastomeric Tubing Sealant Backings: Neoprene, butyl, EPDM, or silicone tubing complying
               with ASTM D 1056, nonabsorbent to water and gas, and capable of remaining resilient at
               temperatures down to minus 26 deg F. Provide products with low compression set and of
               size and shape to provide a secondary seal, to control sealant depth, and otherwise contribute
               to optimum sealant performance.

2.3            ACCESSORY MATERIALS

      A.       Primer: Material recommended by joint sealant manufacturer where required for adhesion of
               sealant to joint substrates indicated, as determined from preconstruction joint-sealant-
               substrate tests and field tests.

      B.       Joint Cleaners for Nonporous Surfaces: Chemical cleaners acceptable to manufacturers of
               sealants and sealant backing materials, free of oily residues or other substances capable of
               staining or harming joint substrates and adjacent nonporous surfaces in any way, and
               formulated to promote optimum adhesion of sealants with joint substrates.

      C.       Bond Breaker Tape:      Self-adhesive, polyethylene film tape as recommended by sealant
               manufacturer.

      D.       Masking Tape: Nonstaining, nonabsorbent material compatible with joint sealants and
               surfaces adjacent to joints.


PART 3: EXECUTION

3.1            INSPECTION

      A.       Examine premises before start of work and ascertain conditions as they actually exist.

      B.       Verify that other trades have completed their work as necessary before application of sealant
               work.

      C.       Examine joint surfaces and conditions to ascertain adequate bond can be obtained, and that
               surfaces are free of defects or foreign substances which would be detrimental to satisfactory
               application of sealants specified. Examine joints indicated to receive joint sealants, with In-
               staller present, for compliance with requirements for joint configuration, installation toler-
               ances, and other conditions affecting joint-sealant performance.

      D.       Report any unsatisfactory conditions or defects and do not proceed with work until such con-
               ditions or defects are corrected. Starting of work shall constitute acceptance of surfaces and
               conditions.

      E.       Proceed with installation only after unsatisfactory conditions have been corrected.


JOINT SEALANTS                                                                                        07920 - 3
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3.2            PREPARATION AND INSTALLATION, GENERAL

      A.       Prepare joint surfaces and install materials in strict accordance with manufacturer's instruc-
               tions and as specified, to achieve properly sealed joints with neat, even appearance.

      B.       Do not proceed with installation of sealants under adverse weather conditions, or when tem-
               peratures are below or above manufacturer's recommended limitations for installation.

      C.       Have joints or spaces to be sealed clean and dry, free of oil, grease, dust and other foreign
               substances which would interfere with or impair sealant work. Clean surfaces immediately
               before installation of primer and/or sealant as applicable and necessary.

      D.       Prime joint surfaces where recommended by sealant manufacturer using primer material
               compatible with sealant used and proper for joint surfaces involved. Do not allow primer to
               spill or migrate onto adjoining surfaces.

      E.       Install bond breaker tape to isolate back of sealant from backing surface wherever required by
               manufacturer's recommendations to insure sealant will perform properly.

      F.       Install compressible sealant backer rod or strip in joints where suitable backing does not exist
               and as required to provide proper depth of sealant as recommended by sealant manufacturer.
               Install sealant backings of type indicated to support sealants during application and at posi-
               tion required to produce cross-sectional shapes and depths of installed sealants relative to
               joint widths that allow optimum sealant movement capability.

               1.      Do not leave gaps between ends of sealant backings.
               2.      Do not stretch, twist, puncture, or tear sealant backings.
               3.      Remove absorbent sealant backings that have become wet before sealant application
                       and replace them with dry materials.

      G.       Depth of sealants shall be as recommended by sealant manufacturer for conditions involved,
               but within the following general limitations, measured at the center (thin) section of bead:

               1.      For normal moving joints sealed with elastomeric sealants and not subject to traffic,
                       provide sealant depth equal to 50% of joint width, but not more than 1/2" deep nor
                       less than 1/4" deep.

               2.      For joints sealed with non-elastomeric sealants, provide sealant depth in the range of
                       75% to 125% of joint width.

      H.       Install sealants by proven techniques to comply with the following and at the same time back-
               ings are installed:

               1.      Place sealants so they directly contact and fully wet joint substrates.
               2.      Completely fill recesses provided for each joint configuration.
               3.      Produce uniform, cross-sectional shapes and depths relative to joint widths that allow
                       optimum sealant movement capability.



JOINT SEALANTS                                                                                        07920 - 4
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      I.        Two-part sealants shall be mixed in strict accordance with manufacturer's instructions using
                recommended mixing equipment. Accurately control proportions of the components to
                achieve ratio established by the manufacturer. Sealant mixing shall not be done until sealant
                is to be applied.

      J.        Use sealant colors as selected and approved by Architect. General intent is to reasonably
                match color of adjacent finished surfaces.

      K.        Sealed joints shall be smooth, free of sags or voids. Sealant surfaces shall be slightly con-
                cave, and slightly below adjoining surfaces. Tool all joints as recommended by manufacturer
                for sealant used.

      L.        Remove excess or misplaced sealant promptly as work progresses. Clean surfaces which have
                been soiled with approved solvent and/or cleaning agent that will not damage surfaces.

      M.        Remove defective or unsatisfactory work if any, and replace with new materials after clean-
                ing and preparing joint surfaces as recommended by manufacturer.

      N.        Leave work in neat, clean condition.

      O.        Remove, clean and re-caulk all previously caulked exterior joints on the building per the Con-
                struction Drawings.

3.4             CLEANING

      A.        Sealant Contractor shall immediately clean all adjacent materials which have been soiled
                and leave work in neat, clean condition. Use only approved type stripping compounds, sol-
                vents and cleaners.

3.5             PROTECTION

      A.        Protect joint sealants during and after curing period from contact with contaminating sub-
                stances and from damage resulting from construction operations or other causes so sealants
                are without deterioration or damage at time of Substantial Completion. If, despite such pro-
                tection, damage or deterioration occurs, cut out and remove damaged or deteriorated joint
                sealants immediately so installations with repaired areas are indistinguishable from the origi-
                nal work.


3.6             SCHEDULE OF SEALANTS

      A.        Unless otherwise noted, sealant type specified shall be used as follows:

           1.       For all exterior joints (except joints in pavement), for interior joints in exterior walls, and
                    for all expansion/control joints in building.

      B.        Provide caulking and sealant of joints and voids where indicated on drawings and as required
                for completion of the work. Locations for such sealed joints and voids include but not neces-
                sarily limited to the following:

JOINT SEALANTS                                                                                          07920 - 5
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               1.   Exterior:

                    a)      All joints between and around the flashing, counter flashing and bar flashing.
                    b)      Any location of joints which could be potential of water leaks.


END OF SECTION 07920




JOINT SEALANTS                                                                                  07920 - 6
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