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Umicore Building Products USA, Inc: VM Zinc® 04 15 2002
SECTION 07610 - SHEET METAL ROOFING
This Guide Specification is intended to aid the Design Professional in specifying and detailing
Umicore Building Products USA Inc. VM ZINC® Double Lock Standing Seam roofing systems.
It is the responsibility of the Design Professional to verify that all conditions, materials, means
and methods are properly addressed and meet the requirements of local building code officials
and jurisdictions.
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.
B. Umicore Building Products USA Inc.’s Published Recommendations and Installation
Instructions
1.2 SUMMARY
A. This Section includes the following sheet metal roofing:
1. VM ZINC® Zinc alloy Double Lock Standing-Seam (DLSS) metal roofing.
B. Related Sections include the following:
1. Division 5 Section "Steel Deck" for steel roof deck supporting sheet metal
roofing.
2. Division 5 Section "Cold-Formed Metal Framing" for secondary support framing
supporting sheet metal roofing.
3. Division 6 Section "Rough Carpentry " for roof sheathing, vertical battens and
skip sheathing
4. Division 7 Section "Building Insulation" for roof insulation.
5. Division 7 Section "Sheet Metal Flashing and Trim" for fascia, copings, flashings
and other sheet metal work not part of sheet metal roofing.
6. Division 7 Section "Roof Accessories" for accessories on roof.
7. Division 7 Section "Joint Sealants" for field-applied sheet metal roofing sealants.
1.3 PERFORMANCE REQUIREMENTS
A. General: Provide complete VM ZINC® Zinc alloy sheet metal roofing system,
including, but not limited to roll formed metal roof pans, cleats, clips, anchors and
fasteners, sheet metal flashing and drainage components related to sheet metal
roofing, fascia panels, trim, wood battens, skip sheathing, underlayment, and
accessories as indicated and as required for a weather tight installation.
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B. Installation: All VM ZINC® sheet metal roofing systems and materials shall be installed
using the best available industry standards and the means and methods recommended
in the manufacturer’s published information, or whichever is more stringent.
C. Wind-Uplift Resistance: Provide complete roofing system including roll formed sheet
metal VM ZINC® roofing capable of resisting the design pressures indicated. Provide
clips, fasteners, and clip spacing of type indicated and with capability to sustain,
without failure, the design loads. Design loads shall be established by the design
professionals responsible for the project and local code requirements.
1. Design Uplift Pressures: [As indicated on Drawings by the design professional.]
a. Field: [As indicated in the Contract Documents].
b. Perimeter: [As indicated on Drawings].
c. Corner: [As indicated on Drawings].
d. Other: [As indicated on Drawings].
2. Provide metal roof panel assemblies that comply with UL 1897 for wind-uplift
resistance class indicated. See Section 3 of this specification for specific
assemblies and wind-uplift ratings. Specifier shall verify that product and
assemblies are listed in UL's current "Roofing Materials & Systems Directory."
D. Thermal Movements: Provide sheet metal roofing that allows 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 roofing 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): Shall be stipulated by the design professional
based on local climate and conditions.
E. Water Infiltration: Provide sheet metal roofing that does not allow water infiltration to
building interior, with metal flashing and connections of sheet metal roofing lapped to
allow moisture to run over and off the material.
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1.4 SUBMITTALS
A. Product Data: For each product indicated. Include details of construction relative to
materials, dimensions of individual components and profiles, and finishes.
B. Shop Drawings: Show fabrication and installation layouts of sheet metal roofing,
including plans, elevations, and keyed references to termination points. Distinguish
between shop- and field-assembled work. Shop drawings to be reviewed by Umicore
Building Products USA, Inc. prior to fabrication. Include the following:
1. Details for forming sheet metal roofing, including seams and dimensions.
2. Details for joining and securing sheet metal roofing, including layout of fasteners,
clips, and other attachments. Include pattern of seams.
3. Details of termination points and assemblies, including fixed points.
4. Details of expansion joints, including showing direction of expansion and
contraction.
5. Details of roof penetrations.
6. Details of edge conditions, including eaves, ridges, valleys, rakes, crickets, and
counterflashings.
7. Details of special conditions.
8. Details of connections to adjoining work.
9. Details of the required accessory items.
10. Sheet metal roofing and attachments.
11. Roof-mounted items including roof hatches, equipment supports, pipe supports
and penetrations, lighting fixtures, snow guards, and items mounted on roof
curbs.
C. Samples for Verification: For each type of exposed component required, prepared on
Samples of size indicated below:
1. Sheet Metal Roofing: 12 inches (300 mm) long by actual panel width, including
finished seam. Include fasteners, cleats, clips, battens, closures, and other
attachments.
2. Trim and Closures: 12 inches (300 mm) long. Include fasteners and other
exposed accessories.
3. Accessories: 12-inch- (300-mm-) long Samples for each type of accessory.
4. Snow Guards: Full-size Sample.
D. Qualification Data: For firms and persons specified in the “Quality Assurance” Article
to demonstrate their capabilities and experience. Include lists of completed projects
with project names and addresses, names and addresses of architects and owners,
and other information specified.
1.5 QUALITY ASSURANCE
A. Installer Qualifications: Engage an experienced installer who has completed sheet
metal roofing similar in material, design, forming method and extent to that indicated for
this Project and with a record of successful in-service performance. Provide evidence
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of installer participation in Umicore Building Products USA Inc.® ProZinc Training
Course.
B. Sheet Metal Roofing Fabricator Qualifications: Shop that employs skilled workers who
custom-fabricate sheet metal roofing similar to that required for this Project and whose
products have a record of successful in-service performance. Provide evidence of
installer participation in Umicore Building Products USA Inc. ProZinc Training Course.
C. Sheet Metal Roofing Standard: Comply with VM ZINC® Architectural Binder,
Installation Manual, or industry best standards, whichever is more stringent. Conform
to dimensions and profiles shown unless more stringent requirements are indicated.
D. Mockups: Before installing sheet metal roofing, construct mockups for each form of
construction required to verify selection made under Sample submittals and to
demonstrate aesthetic effects and qualities of materials and execution. Build mockups
to comply with the following requirements, using exposed and concealed materials and
forming methods indicated for completed work.
1. Locate mockups in the location and of the size indicated or, if not indicated, as
directed by the Architect.
2. Approval of mockups is for other material and construction qualities specifically
approved by Architect in writing.
3. Approval of mockups does not constitute approval of deviations from the
Contract Documents contained in mockups unless such deviations are
specifically approved by Architect in writing.
4. Approved mockups may become part of the completed Work if undisturbed at
time of Substantial Completion.
E. Pre-installation Conference: Conduct conference at Project site. Review methods and
procedures related to sheet metal roofing including, but not limited to, the following:
1. Meet with Owner, Architect, Roofing Consultant, Owner's insurer if applicable,
sheet metal roofing Installer, and installers whose work interfaces with or affects
sheet metal roofing including installers of roof accessories and roof-mounted
equipment.
2. Review and finalize construction schedule and verify availability of materials,
Installer's personnel, equipment, and facilities needed to make progress and
avoid delays.
3. Review methods and procedures related to sheet metal roofing installation.
4. Examine substrate conditions for compliance with requirements, including
flatness and attachment to structural members.
5. Review flashings, special roofing details, roof drainage, roof penetrations,
equipment curbs, and condition of other construction that will affect sheet metal
roofing.
6. Review governing regulations and requirements for insurance, certificates, and
testing and inspecting if applicable.
7. Review temporary protection requirements for sheet metal roofing during and
after installation.
8. Review roof observation and repair procedures after sheet metal roofing
installation.
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9. Document proceedings, including corrective measures and actions required, and
furnish copy of record to each participant.
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1.6 DELIVERY, STORAGE, AND HANDLING
A. Deliver metal coils, sheet metal roofing pans, components, and other sheet metal
roofing materials so as not to be damaged or deformed. Package sheet metal roofing
materials for protection during transportation and handling.
B. Unload, store, and erect sheet metal roofing materials in a manner to prevent bending,
warping, twisting, and surface damage.
C. Stack materials on platforms or pallets, covered with suitable weather tight and
ventilated covering. Store metal coils and sheet metal roofing materials to ensure
dryness. Do not store metal coils or sheet metal roofing materials in contact with other
materials that might cause staining, denting, or other surface damage.
D. Protect strippable protective covering on sheet metal roofing from exposure to sunlight
and high humidity, except to extent necessary for period of sheet metal roofing
installation.
1.7 COORDINATION
A. Coordinate installation of roof curbs, equipment supports, and roof penetrations.
B. Coordinate sheet metal roofing with rain drainage work, flashing, trim, and
construction of metal decks, sheathing, purlins and rafters, parapets, walls, and other
adjoining work to provide a leak proof, secure, and non-corrosive installation.
1.8 EXPRESS LIMITED COMMERCIAL PRODUCT WARRANTY
Available upon request
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PART 2 - PRODUCTS
2.1 ROOFING SHEET METALS
A. VM ZINC® PLUS sheet: Electrolytic, 99.995 percent pure zinc with alloying additives
of titanium and copper, protected on its underside by a proprietary 60 micron coating of
furnace-polymerized polyester and polyurethane-polyamide liquids.
1. Manufacturer:
a. UMICORE BUILDING PRODUCTS USA Inc., East Coast Office-
1) Phone: 919-874-7173
2) Fax: 919-874-7140
3) Email: info@vmzinc-us.com
b. UMICORE BUILDING PRODUCTS USA Inc., West Coast Office-
1) Phone: 503-827-0600
2) Fax: 503-827-0770
3) Email: info@vmzinc-us.com
2. Available thickness: [0.028 inch (0.70 mm)], [0.031 inch (0.80 mm)], [0.039 inch
(1.00 mm)], [0.059 inch (1.50 mm)],unless otherwise indicated.
3. Surface Aspects:
a. VM QUARTZ ZINC® PLUS: A zinc with a dark gray aspect on the exposed
side and protected on its underside by a proprietary 60 micron coating of
furnace-polymerized polyester and polyurethane-polyamide liquid.
b. VM QUARTZ ZINC® : A zinc with a dark gray aspect on both sides
c. ANTHRA ZINC® PLUS: A zinc with a black aspect on the exposed side
and protected on its underside by a proprietary 60 micron coating of
furnace-polymerized polyester and polyurethane-polyamide liquid.
d. ANTHRA ZINC®: A zinc with a black aspect on both sides.
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4. Alloy Properties:
Periodic table reference Zn
Thickness tolerance +/- 1/1000" (0.025 mm)
Density 200 lb/in3 (7.2 kg/dm3)
1/64"/ft 212° F (2.2 mm/m 100°
Thermal expansion C)
Melting point 788° F (420° C)
Re-crystallization point 572° F (300° C)
Limit of elasticity: Rp 0.2 >= 14,504 PSI (100 N/mm2)
Tensile strength >= 21,756 PSI (150 N/mm2)
Elongation at fracture >= 40%
Elongation in creep test (50
N/mm2 or 7250 PSI over a period
of 60 minutes) 0.1%
Vickers hardness >= 40
Heat conductivity 110 W/mk
11,603,200 PSI (80,000
Young's modulus N/mm2)
Not magnetic
UV resistant
Non flammable
5. VM ZINC® Premium Zinc Manufacturing Standard exceeds EN 988:
Specification VM ZINC® Tolerance
Alloy Tolerances
Copper (%) 0.08 – 0.20
Titanium (%) 0.07 – 0.12
Aluminum (%) <=0.015
Dimensional Tolerances
Thickness +/- 0.02mm
Width +2 / -0 mm
Length +5 / -0 mm
Saber <= 1.5 mm/m
Flatness <= 2mm
6. VM ZINC® PLUS properties. Coating on backside of the zinc to have a minimum
abrasion resistance of 140 liters as per ASTM D-968, method A.
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2.2 UNDERLAYMENT MATERIALS
A. Available Products: Subject to compliance with requirements, underlayment products
that may be incorporated into the Work include, but are not limited to, the products
specified.
B. Underlayment: ROOFSHIELD® by PROCTOR for VM ZINC® Fabric Underlayment
and Slip Sheet: High permeability, triple layer spun bonded non-woven polypropylene
fabric
1. Weight: 6.1 oz./sq.yd. (175g/sq.m.)
2. Thickness: 0.023 inch (0.60 mm)
3. Water Vapour Transmission 9.79 Perms (1.96 grams/kPa*h*m) per ASTM E 96
Method A
C. Vapor Retarder: Self-Adhering, Polyethylene-Faced Sheet: ASTM D 1970, 40 mils (1.0
mm) thick minimum, consisting of slip-resisting polyethylene-film reinforcing and top
surface laminated to SBS-modified asphalt adhesive, with release-paper backing; cold
applied.
1. Available Products:
a. Grace, W. R. & Co.; Grace Ice and Water Shield.
b. Henry Company; Perma-Seal PE.
c. Johns Manville International, Inc.; Roof Defender.
d. NEI Advanced Composite Technology; AC Poly Ice and StormSeal.
e. Protecto Wrap Company; Rainproof TM.
f. Soprema, Lastobond (60 mil w/ sanded face for traction on steep slope
applications)
D. Flashing and Low-Slope Flashing: Self-Adhering, High-Temperature Sheet: 30 to 40
mils (0.76 to 1.0 mm) thick minimum, consisting of slip-resisting polyethylene-film top
surface laminated to layer of butyl or SBS-modified asphalt adhesive, with release-
paper backing; cold applied. Provide primer when recommended by underlayment
manufacturer.
1. Thermal Stability: Stable after testing at 240 deg F (116 deg C); ASTM D 1970.
2. Low Temperature Flexibility: Passes after testing at minus 20 deg F (29 deg C);
ASTM D 1970.
3. Available Products:
a. Carlisle Coatings & Waterproofing, Div. of Carlisle Companies Inc.; Dri-
Start "HR" High Performance Roofing Underlayment.
b. Grace, W. R. & Co.; Vycor Ultra.
c. Henry Company; Perma-Seal PE.
2.3 CLIPS AND FASTENERS
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A. VM ZINC® Fixed Clips: 300 Series Stainless Steel Clips. Thickness: 0.015” (0.4mm).
The clip is pre-punched with counter-sunk holes for attachment. Designed to withstand
negative load requirements.
B. VM ZINC® Expansion Clips: 300 Series Stainless Steel Clips. Thickness: 0.024”
(0.6mm) fixed base with 0.015” (0.4mm) thick sliding part. The sliding clip base
incorporates 2-3/4” (70 mm) slot which permits movement. The clip is pre-punched
with counter-sunk holes for attachment. Designed to withstand negative load
requirements. VM ZINC® Insulation Pressure Plate with Integral Clip: 300 Series
Stainless Steel Pressure Plate. Thickness: 0.024” (0.6mm) fixed base with 0.015”
(0.4mm) thick sliding part. The clip is pre-punched with counter-sunk holes for
attachment. Designed to withstand negative load requirements. Clip and Plate
Fasteners: Oval Head, Self-drilling screws, 300 Series Stainless Steel. All fasteners to
seat in pre-punched countersunk holes of VM ZINC® Clips to eliminate potential for
contact and abrasion between fastener head and panel. Fastener head profile shall
eliminate telegraphing through metal panel. Fasteners shall be selected to resist all
negative design load requirements. Minimum pullout strength: 112 lbf (50 daN)
1. Available products:
a. VM ZINC® Oval Head Self Drilling 316 Stainless Steel Fastener by SFS
Stadler
1) 80, 120, 160 & 190 mm with 4,8 mm thread diameter
b. VM ZINC® Wood screw 4mm thread diameter bugle head, Phillips drive,
316 Stainless Steel by Etanco
c. #10 Deck Screws 8mm bugle head, #2 Square Drive, 316 Stainless Steel
2. Design professional and installer to confirm the withdraw and rupture
performance for all fastener and clip combinations during the submittal process.
2.4 Solder, Sealing and Cleaning Agents
A. Solder for Zinc: ASTM B 32, 60 percent lead and 40 percent tin with low antimony, as
recommended by manufacturer.
B. Stripping
1. VM ZINC® Stripping Agent and Flux DECA-QUARTZ for removal of coating prior
to soldering
C. Low to Medium-Modulus Neutral-Curing Sealant: Where joint sealants of this type are
indicated, provide products complying with the following:
1. Products: Available products include the following:
a. .SikaFlex 11fc
b. 795; Dow Corning
2. Type and Grade: S (single component) and NS (nonsag).
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3. Class: 25.
4. Use Related to Exposure: NT (nontraffic).
5. Stain-Test-Response Characteristics: Nonstaining to porous substrates per
ASTM C 1248.
2.5 ACCESSORIES
A. Sheet Metal Roofing Accessories: Provide components required for a complete sheet
metal roofing assembly including trim, copings, fasciae, corner units, ridge closures,
clips, flashings, sealants, and similar items. Match material and finish of sheet metal
roofing, unless otherwise indicated.
1. Closures: Provide closures at eaves and ridges, fabricated of same metal as
sheet metal roofing.
2. Cleats: Mechanically seamed cleats formed from the following material:
a. 300 Series Stainless Steel
3. Backing Plates: Provide metal backing plates at panel end splices, fabricated
from material recommended by manufacturer.
B. Flashing and Trim: Formed from VM ZINC® PLUS zinc Sheet. Provide flashing and
trim as required to seal against weather and to provide finished appearance. Locations
include, but are not limited to, eaves, rakes, corners, bases, framed openings, ridges,
fasciae, and fillers. Finish flashing and trim with same finish system as adjacent sheet
metal roofing.
2.6 FABRICATION
A. General: Roll formed sheet metal roofing to comply with Umicore Building Products
USA Inc.’s Published Recommendations and details reviewed by Umicore Building
Products USA Inc., and industry best standards that apply to the design, dimensions
(pan width and seam height), geometry, metal thickness, and other characteristics of
installation indicated. Fabricate sheet metal roofing and accessories at the shop to
greatest extent possible.
1. VM ZINC® 0.031 inch (0.80 mm) Double Lock Standing-Seam Roofing: double
lock standing-seam pans with finished seam height of 1 inch (25 mm)] or of 1-1/2
inches (38 mm).
B. Sheet metal roofing to allow for expansion in running work sufficient to prevent
leakage, damage, and deterioration of the Work. Form exposed sheet metal work to fit
substrates without excessive oil canning, buckling, and tool marks, true to line and
levels indicated, and with exposed edges folded back to form hems.
1. Lay out sheet metal roofing so cross seams, when required, are made in
direction of flow with higher pans overlapping lower pans. Stagger cross seams.
2. Fold and cleat eaves and transverse seams.
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3. Form and fabricate sheets, seams, strips, cleats, valleys, ridges, edge
treatments, integral flashings, and other components of metal roofing to profiles,
patterns, and drainage arrangements shown and as required for leak proof
construction.
C. Metal Protection: VM ZINC® Panels and Materials shall not be stored or installed so
that they come in contact with or are located beneath areas with copper or copper
containing components.
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PART 3 - EXECUTION
3.1 GENERAL ASSEMBLIES
A. Warm Roof Assemblies
1. Warm Roof 1 (limited to roof slopes >=1:12)
a. Structural substrate: Galvanized steel panel – 22 ga. (0.8mm) min., 20 ga.
(1.0mm) max. B-Module
b. Gypsum sheathing: ¼” Non-structural, glass mat embedded, water
resistant gypsum core panel. Verify span ratings of gypsum sheathing if
alternate module of steel panel substrate is specified. Mechanically
attached with plates and screws. Use maximum lengths possible to
minimize number of joints. Locate edge joints parallel to and on deck ribs.
Stagger end joints of adjacent lengths of roof board. Butt ends and edges
c. Vapor Barrier: Self adhering, SBS polymer modified, glass reinforced
membrane. Prime surface to receive vapor barrier.
d. Rigid Insulation: Minimum 25 psi Extruded Polystyrene, mechanically
attached with plates and screws. Stagger end joints of adjacent lengths of
roof board. Butt ends and edges so they form smooth transitions with no
more than 1/16” of plane change.
e. ½” Mineral Wool Insulation: Minimum compressive strength 14 PSI as per
ASTM C 165. Mechanically attached with plates and screws. Stagger end
joints of adjacent lengths of roof board. Butt ends and edges so they form
smooth transitions with no more than 1/16” of plane change.
f. Underlayment/Slip sheet: High permeability, triple layer spun bonded
polypropylene fabric lapped minimum 6” and sealed. If slope is <2:12
apply self adhering membrane flashing to primed substrate at perimeter
and valleys.
g. VM ZINC® PLUS standing seam roofing with double lock standing seams
2. Warm Roof 2 (limited to roof slopes >=1:12)
a. Structural substrate: Galvanized steel panel – 22 ga. (0.8mm) min., 20 ga.
(1.0mm) max. B-Module
b. Gypsum sheathing: ¼” Non-structural, glass mat embedded, water
resistant gypsum core panel. Verify span ratings of gypsum sheathing if
alternate module of steel panel substrate is specified. Mechanically
attached with plates and screws. Use maximum lengths possible to
minimize number of joints. Locate edge joints parallel to and on deck ribs.
Stagger end joints of adjacent lengths of roof board. Butt ends and edges
c. Vapor Barrier: Self adhering, SBS polymer modified, glass reinforced
membrane. Prime surface to receive vapor barrier.
d. Mineral Wool Insulation: : Minimum compressive strength 14 PSI as per
ASTM C 165. Secure with pressure plates and screws. . Stagger end joints
of adjacent lengths of roof board. Butt ends and edges so they form
smooth transitions with no more than 1/16” of plane change
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e. Underlayment/Slip sheet: High permeability, triple layer spun bonded
polypropylene fabric lapped minimum 6” and sealed. If slope is <2:12
apply self adhering membrane flashing to primed substrate at perimeter
and valleys.
f. VM ZINC® PLUS standing seam roofing with double lock standing seams.
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B. Cold Roof Assemblies
1. Cold Roof 1 (limited to roof slopes >1:12)
a. Structural Sheathing: Minimum ¾” Exterior Grade Plywood. Insulation,
ventilation, and appropriate moisture vapor control measures should be
verified by a qualified design professional to reduce the potential for
condensation beneath the roofing components.
b. Underlayment/Slip sheet: High permeability, triple layer spun bonded
polypropylene fabric lapped minimum 6” and sealed. If slope is <2:12 lap
12” and seal, apply self adhering membrane flashing at perimeter and
valleys.
c. VM ZINC® PLUS standing seam roofing with 1” high double lock seams
2. Winter Climate Alpine Roof
a. Include a Vertical Batten and Horizontal Skip Sheathing System to the
systems above: Dimensional treated lumber installed to resist wind uplift
requirements. Secured with screws to the structural substrate below.
Batten system to provide positive outside air flow beneath metal roofing
components. Ventilation requirements and details shall be provided by the
architect.
3.2 EXAMINATION
A. Examine substrates, areas, and conditions, with Installer present, for compliance with
requirements for installation tolerances, sheet metal roofing supports, and other
conditions affecting performance of work.
1. Examine primary and secondary roof framing to verify that rafters, purlins,
angles, channels, and other structural panel support members and anchorages
have been installed.
2. Examine solid roof sheathing to verify that sheathing joints are supported by
framing or blocking and that installation is within flatness tolerances.
3. Verify that substrate is sound, dry, smooth, clean, sloped for drainage, and
completely anchored, and that provision has been made for roof drains,
scuppers, flashings, and penetrations through sheet metal roofing.
4. For the record, prepare written report, endorsed by Installer, listing conditions
detrimental to performance of work.
B. Examine roughing-in for components and systems penetrating sheet metal roofing to
verify actual locations of penetrations relative to seam locations of sheet metal roofing
before sheet metal roofing installation.
C. Proceed with installation only after unsatisfactory conditions have been corrected.
3.3 UNDERLAYMENT AND VAPOR RETARDER INSTALLATION
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A. Fabric Underlayment and Slip Sheet: Install underlayment/slip sheet on roof sheathing
on continuous surface under sheet metal roofing. Use mechanical fasteners in the laps
for anchorage. Apply tape as per manufacturer recommendation to seal the laps.
Apply at locations indicated on Drawings, in shingle fashion to shed water, with lapped
and taped joints of not less than 6 inches (150 mm). For slopes <2:12 increase laps to
12 inches (300 mm). Cover underlayment within 60 days.
B. Self-Adhering Sheet Underlayment: Install self-adhering sheet underlayment, wrinkle
free, on continuous sheathing. Apply primer if required by underlayment manufacturer.
Comply with temperature restrictions of underlayment manufacturer for installation; use
primer rather than nails for installing underlayment at low temperatures. Apply at
locations indicated on Drawings , in shingle fashion to shed water, with end laps of not
less than 6 inches (150 mm) staggered 24 inches (600 mm) between courses. Overlap
side edges not less than 3-1/2 inches (90 mm). Roll laps with roller. Cover
underlayment within 14 days.
C. Install flashings to cover underlayment to comply with project requirements.
3.4 INSTALLATION, GENERAL
A. General: Anchor sheet metal roofing and other components of the Work securely in
place, with provisions for thermal and structural movement. Install fasteners, solder,
welding rods, protective coatings, separators, sealants, and other miscellaneous items
as required for a complete roofing system.
1. Field cutting of sheet metal roofing by torch is not permitted.
2. Provide metal closures at peaks rake edges rake walls and each side of
ridge and hip caps.
3. Locate and space fastenings in uniform vertical and horizontal alignment.
4. Install ridge and hip caps as sheet metal roofing work proceeds.
5. Locate roofing splices over, but not attached to, structural supports. Stagger
roofing splices and end laps to avoid a four-panel lap splice condition.
6. Lap metal flashing over sheet metal roofing to allow moisture to run over and off
the material.
B. Allowable Erection Tolerance
1. Maximum Alignment Variation: 1/8 in (3 mm)
C. Fasteners: Use fasteners of type and size that will secure the roof components in
compliance with requirements of the project. Clip fasteners shall be selected with
heads that will seat flush to the deck, eliminating potential for contact and abrasion with
the panel, and telegraphing.
D. Conceal fasteners and expansion provisions where possible in exposed work and
locate to minimize possibility of leakage. Cover and seal fasteners and anchors as
required for a tight installation.
3.5 VM ZINC® SHEET METAL ROOFING INSTALLATION
VM ZINC® SHEET DOUBLE LOCK STANDING SEAM METAL ROOFING 07610 - 16
Umicore Building Products USA, Inc: VM Zinc® 04 15 2002
A. General: Install , roll-formed sheet metal in compliance with industry best standards
and Umicore Building Products USA’s published recommendations or whichever is
more stringent. Provide sheet metal roofing of full length from eave to ridge unless
otherwise restricted by shipping limitations.
B. Standing-Seam Sheet Metal Roofing: Fasten sheet metal roofing to supports with
concealed clips at each standing-seam joint at location, spacing, and with fasteners in
compliance with industry best standards and Umicore Building Products USA’s
published installation information or whichever is more stringent.
1. Install clips to supports with self-drilling fasteners.
2. Install pressure plates at locations indicated in Umicore Building Products USA’s
published installation instructions.
3. Seamed Joint: Crimp standing seams with manufacturer-approved tools so
cleat, sheet metal roofing, and field-applied seam sealer are completely
engaged.
3.6 UL RATED WIND-UPLIFT ASSEMBLIES (Specifier shall verify that product and
assemblies are listed in UL's current "Roofing Materials & Systems Directory.")
A. Warm Roof 1, Uplift Resistance – 105 psf
1. Deck: Steel, min 20 MSG, max 22 MSG
2. Barrier Board (optional): 1/4 in. thick G-P Gypsum Dens Deck®, loose laid
3. Underlayment: Any UL Classified self-adhering modified bitumen membrane,
min. 3-1/2 in. sidelap.
4. Insulation: Any UL Classified EPS insulation, loose laid, any thickness.
5. Insulation: Any rigid mineral wool fiberboard (not UL Classified), loose laid, any
thickness, Minimum compressive strength 14 PSI as per ASTM C 165.
6. Underlayment: “VM ZINC® ROOFSHIELD®” (not UL Classified), min. 6 in.
sidelap,
7. Roof Deck Fasteners (Panel Clips): “VM ZINC® DLSS One Hole Sliding Clip”,
consisting of 1 in. high tab, and 2-3/8 in. by 4 in. base fabricated from min 0.020
in. thick stainless steel. Clips to be spaced max. of 18 in. OC.
8. Fasteners: Fasteners used to attach the panel clips to steel deck, No. 10-16
self-tapping steel screws with a min. ½ in. penetration. One screw to be used per
clip.
9. Roof Covering: “VM ZINC® Double Lock Standing Seam Panel”, fabricated
from min 0.024 in. thick zinc, panels to be max. 17 in. wide and max. 1 in. high
rib.
B. Warm Roof 1, Uplift Resistance – 165 psf
1. Deck: Steel, min 20 MSG, max 22 MSG
2. Barrier Board (optional): 1/4 in. thick G-P Gypsum Dens Deck®, loose laid
3. Underlayment: Any UL Classified self-adhering modified bitumen membrane,
min. 3-1/2 in. sidelap.
4. Insulation: Any UL Classified EPS, loose laid, any thickness.
5. Insulation: Any rigid mineral wool fiberboard (not UL Classified), loose laid, any
thickness, Minimum compressive strength 14 PSI as per ASTM C 165.
VM ZINC® SHEET DOUBLE LOCK STANDING SEAM METAL ROOFING 07610 - 17
Umicore Building Products USA, Inc: VM Zinc® 04 15 2002
6. Underlayment: “VM ZINC® ROOFSHIELD®” (not UL Classified), min. 6 in.
sidelap,
7. Roof Deck Fasteners (Panel Clips): “VM ZINC® DLSS One Hole Sliding Clip”,
consisting of 1 in. high tab, and 2-3/8 in. by 4 in. base fabricated from min 0.020
in. thick stainless steel. Clips to be spaced max. of 12 in. OC.
8. Fasteners: Fasteners used to attach the panel clips to steel deck, No. 10-16
self-tapping steel screws with a min. ½ in. penetration. One screw to be used per
clip.
9. Roof Covering: “VM ZINC® Double Lock Standing Seam Panel”, fabricated
from min 0.024 in. thick zinc, panels to be max. 17 in. wide and max. 1 in. high
rib.
C. Uplift Resistance – 150 psf
1. Deck: Min. ¾ in (nominal) thick, APA Rated Grade B-C plywood,
2. Barrier Board (optional): 1/4 in. thick G-P Gypsum Dens Deck®, loose laid
3. Underlayment: “VM ZINC® ROOFSHIELD®” (not UL Classified), min. 6 in.
sidelap, mechanically fastened.
4. Roof Deck Fasteners (Panel Clips): “VM ZINC® DLSS Three Hole Sliding
Clip”, consisting of 1 in. high tab fabricated from min. 0.016 in thick stainless
steel and a 7/8 in. by 4-5/16 in. base fabricated from min. 0.020 in. thick stainless
steel. Clips to be spaced max. of 18 in. OC.
5. Fasteners: Fasteners used to attach the panel clips to the plywood deck to be
No. 8-14 (4mm) by 1-1/2 in. long stainless wood screws. Two fasteners per clip
fastened through guide holes located at each end of the clip.
6. Roof Covering: “VM ZINC® Double Lock Standing Seam Panel”, fabricated
from min 0.024 in. thick zinc, panels to be max. 17 in. wide and max. 1 in. high
rib.
D. Uplift Resistance – 225 psf
1. Deck: Min. ¾ in (nominal) thick, APA Rated Grade B-C plywood,
2. Barrier Board (optional): 1/4 in. thick G-P Gypsum Dens Deck®, loose laid
3. Underlayment: “VM ZINC® ROOFSHIELD®” (not UL Classified), min. 6 in.
sidelap, mechanically fastened.
4. Roof Deck Fasteners (Panel Clips): “VM ZINC® DLSS Three Hole Sliding
Clip”, consisting of 1 in. high tab fabricated from min. 0.016 in thick stainless
steel and a 7/8 in. by 4-5/16 in. base fabricated from min. 0.020 in. thick stainless
steel. Clips to be spaced max. of 12 in. OC.
5. Fasteners: Fasteners used to attach the panel clips to the plywood deck to be
No. 8-14 (4mm) by 1-1/2 in. long stainless wood screws. Two fasteners per clip
fastened through guide holes located at each end of the clip.
6. Roof Covering: “VM ZINC® Double Lock Standing Seam Panel”, fabricated
from min 0.024 in. thick zinc, panels to be max. 17 in. wide and max. 1 in. high
rib.
E. Uplift Resistance – 225 psf
1. Deck: Min. ¾ in (nominal) thick, APA Rated Grade B-C plywood,
2. Barrier Board (optional): 1/4 in. thick G-P Gypsum Dens Deck®, loose laid
3. Underlayment: “VM ZINC® ROOFSHIELD®” (not UL Classified), min. 6 in.
sidelap, mechanically fastened.
VM ZINC® SHEET DOUBLE LOCK STANDING SEAM METAL ROOFING 07610 - 18
Umicore Building Products USA, Inc: VM Zinc® 04 15 2002
4. Roof Deck Fasteners (Panel Clips): “VM ZINC® Fixed Clip” min. 0.016 in. thick
stainless steel, 1-7/16 in. wide and 1 in. high with a 1 in. wide horizontal leg.
Clips to be spaced max. 12 in. OC.
5. Fasteners: Fasteners used to attach the panel clips to the plywood deck to be
No. 8-14 (4mm) by 1-1/2 in. long stainless wood screws. Two screws to be used
per clip.
6. Roof Covering: “VM ZINC® Double Lock Standing Seam Panel”, fabricated
from min 0.024 in. thick zinc, panels to be max. 17 in. wide and max. 1 in. high
rib.
3.7 CLEANING AND PROTECTION
A. Clean exposed metal surfaces of dirt and debris with warm water (no high pressure)
and gently rubbing the panels in the same direction as the grain of the zinc using a
clean cotton cloth.
B. Clean and neutralize flux materials. Clean off excess solder.
C. Remove protective films within 90 days of installation. On completion of sheet metal
roofing installation, clean finished surfaces, including removing unused fasteners,
metal filings, rivet stems, and pieces of flashing. Maintain in a clean condition during
construction.
END OF SECTION 07610
VM ZINC® SHEET DOUBLE LOCK STANDING SEAM METAL ROOFING 07610 - 19
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