Alpha Metal Manufacturing

SECTION 07600

Standing Seam Specification Sheet

PART 1 GENERAL

1.01 Section includes

Preformed, prefinished metal roofing and flashing.

Miscellaneous trim, flashing, closures, drip flashing and accessories.

Sealant

Fastening devices.

1.02 Related Sections

Section 05120: Structural Steel Framing.

Section 05500: Miscellaneous Metal Fabrication.

Section 06100: Rough Carpentry.

Section 07631: Flashing and Sheet Metal Gutters.

Section 07900: Sealants

1.03 References

American Iron & Steel Institute (AISA) Specification for the Design of Coldformed Steel Structural Members.

ASTM A-525 Steel Sheet, Zinc-Coated (Galvanized)

ASTM E-283-84

ASTM E-331-86

ASTM E-1592

Spec Data Sheet – Galvalume Sheet Metal.

Building Materials Directory – Underwriter’s Laboratories, Test Procedure 580.

1.04 Assembly Description

The roofing assembly includes preformed sheet metal panels, related accessories, valleys, hips, ridges, eaves, corners, rakes, miscellaneous flashing and attaching devices.

1.05 Submittals

Submit detailed drawings showing layout of panels, anchoring details, joint details, trim, flashing, and accessories. Show details of weatherproofing, terminations, and penetrations of metal work.

Submit a sample of each type of roof panel, complete with factory finish.

Submit results indicating compliance with minimum requirements of the following performance tests:

1. Air Infiltration ASTM E 283-84

2. Water Infiltration ASTM E 331-86

3. Wind Uplift – UL90

1.06 Quality Assurance

Manufacturer: Company specializing in Architectural Sheet Metal Products with five (5) years minimum experience.

No product substitutions shall be permitted without meeting specifications.

Substitutions shall be submitted 10 days prior to bid date and acceptance put forth in an addendum.

No substitutions shall be made after bid date.

1.07 Fabrication, storage and handling

Upon fabrication of panels and other materials, installer shall examine the shipment for damage and completeness.

Panels should be stored in a clean, dry place. One end should be elevated to allow moisture to run off.

Panels with strippable film must not be stored in the open, exposed to the sun.

Stack all materials to prevent damage and to allow for adequate ventilation.

1.08 Warranty

Paint finish shall have a twenty-five (25) year guarantee against cracking, peeling and fade ( not to exceed 5 N.B.S. Units).

Kyrar finish shall have a thirty (30) year guarantee against cracking, peeling and fading )not to exceed 7 N.B.S. Units).

Galvalume material shall have a twenty-five (25) year guarantee against failure due to corrosion, rupture or perforation.

Applicator shall furnish guarantee covering watertightness of the roofing system for the period of two (2) years from the date of substantial completion.

PART 2 PRODUCT

2.01 Acceptable Manufacturers

Alpha Metal Manufacturing, Inc. of Lavaca, Arkansas.

Substitutions shall fully comply with specified requirements.

2.02 Sheet Materials

A. Prefinished metal shall be hot-dipped galvanized – ASTM A446-85 grade C G90 Coating

A525-86 Gauge core steel or prefinished Galvalume – ASTM 792-86 AZ-55.

B. Unfinished metal shall be grade C Galvalume ASTM 792-86, AZ 55, “Satin Finish”.

Finish shall be (full strength Kynar 500 Fluoropolymer coating) (Copper-Cote) (Lead-Cote) (Champagne) coating, applied by the manufacturer on a continuous coil coating line, with a top side dry film thickness of 0.70 to 0.90 mil over 0.25 to 0.35 mil prime coat, to provide a total dry film thickness of 0.95 to 1.25 mil. Bottom side shall be coated with primer with a dry film thickness of 0.25 mil. Finish shall conform to all tests for adhesion, flexibility, and longevity as specified by the Kynar 500 finish supplier.

2.03 Accessory Materials

Fasteners: (Galvanized Steel) (Stainless Steel) (Cadmium Plated Steel) with washers where required.

Sealant: As specified in Section 07900 ( ) type.

2.04 Fabrication

All exposed adjacent flashing shall be of the same material and finish as the roof panels.

Hem all exposed edges of flashing on underside, ½ inch.

Part 3 Execution

3.01 Inspection

A. Substrate:

1. Examine plywood or metal deck to ensure proper attachment to framing.

2. Inspect roof deck to verify deck is clean and smooth, free of depressions, waves, or

projections, level to plus or minus ¼” in 20’, and properly sloped to (Valleys) or

(Eaves)

3. Verify roof openings, curbs, pipes, sleeves, ducts or vents through roof are solidly

set, cant strips and reglets in place, and nailing strips located.

4. Verify deck is dry and free of snow or ice. (Flutes in steel deck to be clean and dry) or

joints in wood deck to be solidly supported and nailed).

B. Felting:

1. Verify #30 unperforated asphalt saturated roofing felt underlayment has been

installed over solid sheathing and fastened in place.

2. Felt to be installed horizontally, starting at eave to ridge with a 6″ minimum overlap

and 18″ endlaps.

3. Nail heads to be totally flush with the substrate.

3.02 Installation

Comply with manufacturers standard instructions and conform to standards set forth in the manufacturers standard literature, in order to achieve a watertight installation.

Install panels in such a manner that horizontal lines are true and level and vertical lines are plumb.

Install starter and edge trim before installing roof panels.

Attach panels with #10 – 12 X 1″ pancake head wood screws, spaced in accordance with approved shop drawings.

Install sealants for preformed roofing panels as approved on ship drawings.

Do not allow traffic on completed roof, if required, provide cushioned walk boards.

Do not allow panels or trim to come into contact with dissimilar materials.

Protect installed roof panels and trim from damage caused by adjacent construction until completion of installation.

Remove and replace any panels or components which are damaged beyond successful repair.

3.03 Cleaning

Clean any grease, finger marks or stains from the panels per manufacturer’s recommendations.

Remove all scrap and construction debris from the site.