**SECTION 07611**

**METAL SHINGLES**

**PART 1 GENERAL**

**1.01 SECTION INCLUDES**

> A. Preformed metal roofing and flashings.
>
> B. Miscellaneous trim, flashings, closures, drip flashings and
> accessories.
>
> C. Fastening devices.

**1.02 RELATED SECTIONS**

> A. Section 06100 - Rough Carpentry and sheathing.
>
> B. Section 07620 - Sheet Metal Flashing and Trim.

**1.03 REFERENCES**

> A. U. S. General Services Administration, Historic Preservation
> Technical Procedures, 07313-01 Repairing A Metal Shingle Roof.
>
> B. ASTM D 226 - Standard Specification for Asphalt-Saturated Organic
> Felt Used in Roofing and Waterproofing; 1997a.
>
> C. ASTM D 1970 - Standard Specification for Self-Adhering Polymer
> Modified Bituminous Sheet Materials Used as Steep Roofing Underlayment
> for Ice Dam Protection; 2000.
>
> D. ASTM D 4586 - Standard Specification for Asphalt Roof Cement,
> Asbestos-Free; 2000.
>
> E. ASTM A 653/A 653M - Standard Specification for Steel Sheet,
> Zinc-Coated (Galvanized) or Zinc-Iron Alloy-Coated (Galvannealed) by
> the Hot-Dip Process; 2000.
>
> F. Spec Data Sheet - Galvalume Sheet Metal by Bethlehem Corp.
>
> G. SMACNA (ASMM) - Architectural Sheet Metal Manual; Sheet Metal and
> Air Conditioning Contractors\' National Association; 1993, Fifth
> Edition.

**1.04 ASSEMBLY DESCRIPTION**

> A. The roofing assembly includes preformed sheet metal shingles,
> related accessories, valleys, hips, ridges, eaves, corners, rakes,
> build-in rain gutter system and miscellaneous flashing/ attaching
> devices.

**1.05 SUBMITTALS**

> A. Submittals must comply with the requirements set forth in Section
> 01330 - Submittals.
>
> B. Samples: Submit a sample of each type of roofing shingle showing
> the shape and finish to match the original tile.
>
> C. Samples: Submit samples of manufacturer's standard colors for
> selection of appropriate color by Contracting Officer.

**1.06 QUALITY ASSURANCE**

> A. Perform work in accordance with SMACNA Architectural Sheet Metal
> Manual requirements and standard details, except as otherwise noted.
>
> B. Installer Qualifications: Company specializing in performing sheet
> metal roof installations with minimum five (5) years of experience.

**1.07 DELIVERY, STORAGE, AND PROTECTION**

> A. Stack material to prevent twisting, bending, or abrasion, and to
> provide ventilation.
>
> B. Store shingles in a clean, dry location. Elevate one end to allow
> moisture to run off.
>
> C. Shingles with a strippable film must not be stored in the open,
> exposed to the sun.
>
> D. Prevent contact with materials which may cause discoloration or
> staining.

**PART 2 PRODUCTS**

1.  **MANUFACTURERS**

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A.  W. F. Norman Corp. P.O Box 323, 214 N. Cedar st., Nevada, MO 64772,
    800-641-4038 [www.wfnorman.com](http://www.wfnorman.com/), or
    approved equal. Note: Metal shingles provide by National Park
    Service.

**2.02 SHEET MATERIALS**

> A. New Shingles: Provided by National Park Service
>
> B. Metal Ridge Cap: Berridge prefinished metal ridge cap, 12 inches
> wide.
>
> C. Felt Underlayment: Asphalt-saturated organic roofing felt,
> unperforated, complying with ASTM D 226, Type II (\"No.30\").
>
> D. Adhesive Waterproof Membrane: Rubberized asphalt sheet bonded to
> sheet polyethylene, complying with ASTM D 1970, 40 mil total
> thickness, with strippable treated release paper.
>
> E. Unfinished metal shall be Grade C Galvalume ASTM 792-86 AZ-55.
>
> F. Finish shall be full strength Kynar 500 Fluoropolymer coating,
> applied by the manufacturer on a continuous coil coating line, with a
> top side film thickness of 0.70 - 0.90 mil over 0.25 - 0.35 mil prime
> coat, to provide a total dry film thickness of 0.95 - 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 Kynar 500 finish supplier.
>
> G. Strippable film shall be applied to the top side of the painted
> coil to protect the finish during fabrication, shipping and field
> handling. This strippable film must be removed before installation.

**2.03 ACCESSORIES**

> A. Fasteners: Galvanized steel, with washers where required.
>
> B. Nails: Standard round wire shingle type, of hot-dipped zinc coated
> steel or copper, of sufficient length to penetrate through roof
> sheathing or 3/4 inch into roof sheathing or decking. **Nails must be
> compatible with flashing and roofing tiles. Use stainless steel nails
> over ACQ treated wood materials.**

**2.04 FABRICATION**

> A. Form sections true to shape, accurate in size, square, and free
> from distortion or defects.
>
> B. All exposed adjacent flashing shall be of the same material and
> finish as the roof shingles.
>
> C. Hem exposed edges on underside 1/2 inch; miter and seam corners.
>
> D. Shingles to be of overlapping, interlocking design, fastened to
> solid substrate with hidden roofing nails.

**PART 3 EXECUTION**

**3.01 EXAMINATION**

> A. Inspect roof deck to verify deck is clean and smooth, free of
> depressions, waves, or projections, properly sloped to drains.
>
> B. Verify deck sheathing is dry. Verify joints in wood deck are
> solidly supported and fastened.
>
> D. Verify roofing termination and base flashings are in place, sealed,
> and secure.

**3.02 PREPARATION**

> B. Back paint concealed metal surfaces and surfaces in contact with
> dissimilar metals with protective backing paint to a minimum dry film
> thickness of 15 mil.
>
> C. Place eave edge metal flashings tight with fascia boards. Weather
> lap joints 2 inches and seal with plastic cement. Secure flange with
> nails spaced 8 inches o/c.
>
> D. Treat all cut edges of shingles with paint to match shingle finish.

**3.03 INSTALLATION -- ADHESIVE WATERPROOF MEMBRANE**

> A. Install adhesive waterproof membrane on solid sheathing over entire
> roof .

**3.04 UNDERLAYMENT**

A. Install #30 unperforated asphalt saturated roofing felt underlayment
over entire roof.

> B. Install horizontally over adhesive waterproof membrane with 6"
> minimum overlap and 28" endlaps.
>
> C. Ensure all nail heads are flush with substrate. Nails shall be
> galvanized roofing nails with coated felt caps.

**3.05 INSTALLATION - ROOFING**

> A. Carefully remove existing asphalt and or metal roofing.
>
> B. Comply with shingle manufacturer's installation instructions and
> SMACNA standards in order to achieve a watertight installation.
>
> C. Apply adhesive waterproof membrane and underlayment over entire
> roof area as noted above.
>
> D. Install continuous ridge cap in strict accordance with
> manufacturer's instructions and in a manner compatible with metal
> shingles, underlayment and flashing.
>
> E. Metal Ridge Cap: Install new metal ridge cap as recommended by the
> metal ridge cap manufacturers. Set ridge cap in a continuous bead of
> sealant on each side of the ridge.
>
> F. Install shingles to ensure that horizontal lines are true and level
> and vertical lines are plumb.
>
> G. Remove protective strippable film prior to installation of roof
> shingles.
>
> H. Attach shingles using manufacturer's standard clips and fasteners,
> spaced in accordance with approved shop drawings.
>
> I. Do not allow shingles or trim to come into contact with dissimilar
> materials.
>
> J. Do not allow traffic on completed roof.
>
> K. Protect installed shingles and trim from damage caused by adjacent
> construction until completion of installation.
>
> L. Remove and replace any shingles or components which are damaged
> beyond successful repair.

**3.06 CLEANING**

A. Clean any grease, finger marks or stains from the shingles per
manufacturer's recommendations.

B. Remove all scrap and construction debris from the site.

**END OF SECTION**