SECTION 07612
HIGH SNAP-ON STANDING SEAM METAL ROOFING PANELS

PART 1: GENERAL

1.01 SECTION INCLUDES

A. Standing Seam Metal Roofing.

B. Related Flashing and Accessories.

1.02 RELATED SECTIONS

A. Section 05300-Metal Decking.

B. Section 06100-Rough Carpentry: Plywood and Underlayment.

C. Section 07200-Insulation.

D. Section 07500-Membrane Roofing: Roofing Materials, Fabric, Felt or Paper.

E. Section 07900-Joint Sealers: Sealants and Caulking.

1.03 REFERENCES

A. ASTM A 446: Steel Sheet, Zinc-Coated (Galvanized) By the Hot Dip Process, Structural Physical Quality.

B. ASTM A 525: General Requirements for Steel Sheet, Zinc-Coated by the Hot Dip Process.

C. ASTM B 209: Aluminum and Aluminum Alloy Sheet and Plate.

D. ASTM E 283: Static Air Infiltration.

E. ASTM E 331: Static Water Infiltration.

F. Herr Voss: Tension Leveling.

G. UL 90 Rating: Wind Uplift Approval Conforming to Underwriters Laboratories (UL) Section 580 Specifications.

H. SMACNA: Architectural Sheet Metal Manual.

1.04 SYSTEM DESCRIPTION

A. Factory formed, prefinished standing seam metal roofing system with concealed fasteners over solid substrate. Perimeter trim to match.

B. Panels manufactured in continuous lengths up to 40 ft. (12.2m).

1.05 SUBMITTALS

A. Shop drawings, showing layout of panels, details of edge conditions, joints, corners, panel profiles, clips, trim, flashing and special details shall be submitted for approval.

B. Samples illustrating gauge, finish, color and texture of materials to be used shall be submitted for approval.

C. Panel manufacturer shall submit certification that the panels will be tension leveled during the roll forming process.

D. Provide verification that the standing seam panels are factory roll formed and UL 90 rated.

E. Distinguish between factory and field assembly work.

1.06 QUALITY ASSURANCE

A. Panels adhere to the previously mentioned criteria as proven by the submittals.

B. Underwriters Laboratories (UL) wind uplift resistance classification: Roof assembly shall be classified as class UL 90 as defined by UL 580 specifications.

C. Static Air Infiltration: Completed roof system shall have a maximum of 0.06 CFM/sq. ft. with 6.24 PSF air pressure differential as per ASTM E 283.

D. Water Infiltration: No evidence of water penetration at an inward static air pressure differential of not less than 6.24 PSF and not more than 12.00 PSF as per ASTM E 331.

E. Factory fabricated components shall be crated in cartons marked with the manufacturer's name or trademark and a UL 90 label where applicable.

F. Prequalification: Submit identification of at least 3 projects of similar scope and complexity along with the architect, owner and general contractor contacts. Applicator shall have three years minimum experience in application of similar products.

G. Field measurements will be taken prior to fabrication to assure symmetry.

H. Substitutions: Requests shall be submitted in writing at least 10 days prior to bid date and accompanied by product literature and samples.

I. No substitutions will be permitted after bid date.

1.07 DELIVERY, STORAGE AND HANDLING

A. Deliver, store, protect and handle products to site under provisions of Section [01600.]

B. Stack prefinished material to prevent twisting, bending, abrasion, scratching and denting. Elevate one end of each skid to allow for moisture run-off.

C. Prevent contact with material that may cause corrosion, discoloration or staining.

D. Store material in a safe, dry, above-ground location.

E. Trim with strippable film shall not be exposed to direct sunlight or extreme heat.

F. Protect all materials and installations from damage by other trades.

G. Do not allow material storage or traffic on installed panel surface.

1.08 WARRANTY

A. Panel applicator shall provide a two-year weathertightness warranty.

B. Panel manufacturer shall provide a 20-year non-prorated warranty for the paint finish covering cracking, checking, blistering, peeling, flaking, chipping, chalking and resistance to color fade.

 

PART 2: PRODUCTS

2.01 MANUFACTURERS

A. Petersen Aluminum Corporation, 1005 Tonne Road, Elk Grove Village, IL 60007.

2.02 MATERIALS

A. PAC-CLAD 24 ga G-90 Galvanized, HIGH SNAP-ON STANDING SEAM panels with a 70% Kynar 500 or Hylar 5000 (PVDF) finish. Panels to be 11-in.(280mm), 18-in.(460mm) or 19-in.(485mm) on center with a minimum seam height of 1-1/2". Underside of panels to be protected by an polyester washcoat with a dry film thickness of 0.3 mils and panel color to be selected from Petersen Aluminum's standard color chart. Standing seam caps will be made from matching material and feature a positive, metal-to-metal locking mechanism.

******[OR]******

A. PAC-CLAD 24 ga. G-90 Galvanized, INTEGRAL STANDING SEAM panels with a 70% Kynar 500 or Hylar 5000(PVDF) finish. Panels to be 11-in.(280mm), 18-in.(460mm) or 19-in.(485mm) on center with a minimum seam height of 1-1/2"(38mm). Underside of panels to be protected by a polyester washcoat with a dry film thickness of 0.3 mils and panel color to be selected from Petersen Aluminum's standard color chart.

******[OR]******

A. PAC-CLAD 24 ga. G-90 Galvanized, INTEGRAL BATTEN panels with a 70% Kynar 500 or Hylar 5000(PVDF) finish. Panels to be 11-in.(280mm), 18-in.(460mm) or 19-in.(485mm) on center with a minimum seam height of 1-1/2"(38mm). Underside of panels to be protected by a polyester washcoat with a dry film thickness of 0.3 mils and panel color to be selected from Petersen Aluminum's standard color chart.

******[OR]******

A. PAC-CLAD 24 ga. G-90 Galvanized, REDI-ROOF STANDING SEAM panels with a 70% Kynar 500 or Hylar 5000(PVDF) finish. Panels to be 12-in.(300mm) on center with a minimum seam height of 1-1/2"(38mm). Underside of panels to be protected by a polyester washcoat with a dry film thickness of 0.3 mils and panel color to be selected from Petersen Aluminum's standard color chart.

B. Concealed fastening clips: [G-90 Galvanized steel] [6061-T6 extruded aluminum] (dependent on profile), spaced 18-in.(460mm) on center.

C. Fasteners: [1-in.(25mm) #10 pancake head wood screw with a #2 Phillips head size] (minimum 2 fasteners per clip).

D. Underlayment: 30 lb. roofing felt lapped, staggered and applied horizontally from eave to ridge.

E. Plywood deck: 5/8"(16mm) nominal thickness.

******[OR]******

E. Nailable insulation: consisting of 1 in.(25mm) minimum to 3-1/2 in.(90mm) maximum nominal thickness Classified Polyisocyanurate foamed plastic with a factory laminated 7/16 In.(11mm) thick APA rated Oriented Strand Board (OSB). Density of foamed plastic to be 2 pcf.

F. Soffit panels: 12-in.(300mm) on center "V" grooved panels in .032 aluminum with a Kynar finish. Select from standard color chart.

G. Flashing and accessories: Fabricated from matching PAC-CLAD Kynar 500 sheet metal in accordance with standard SMACNA procedures and details.

2.03 FABRICATION

a. Panels 40-ft.(12.2 in.) and less will be in one continuous length.

B. Panels fabricated by a portable roll former will not be approved.

c. Fabricate trim and flashings from same material as the roof system.

 

PART 3: EXECUTION

3.01 EXAMINATION

A. Inspect roof deck to verify deck is even, smooth, sound and free of depressions, waves or projections and properly sloped.

B. Installer shall examine all substrates on which work is to be applied. Any surface not suitable for application of metal panel system shall be conveyed in writing to the architect.

3.02 PREPARATION

A. Provide horizontal layers of 30# roofing felt parallel to the eave. Shingle rows of felt from eave to ridge with a 6-in(150mm) minimum overlap and stagger felt ends.

3.02 INSTALLATION

A. Conform to standards set forth in the SMACNA architectural sheet metal manuals.

B. Install panels plumb, level and straight with seams and ribs parallel, conforming to the design as indicated.

C. Install panels so that they are weathertight&endash;

without waves, warps, buckles or distortions &endash; and allow for expansion and contraction. Exercise care in handling panels and trim to prevent surface damage.

D. Caulk all flashing and panel joints that require caulking to prevent water penetration.

E. Ribbed pans will be vertically broken under ridges and hooked at the eaves to insure weathertightness.

F. Remove masking on trim flashing immediately after installation.

g. Hem all raw edges on flashings.

3.03 CLEANING

A. Dispose of excess materials and debris from the job site.

B. Leave panels clean and free from fringes, marks, grease and stains.

C. Thoroughly clean and touch-up any areas scarred during installation with a touch-up paint approved by panel manufacturer. Only minor scratches and fastener heads shall be touched-up; any other damaged material shall be replaced.