**SPECIAL SPECIFICATION**

**SECTION 07600**

**[FLASHING AND SHEET METAL]{.underline}**

[Page]{.underline}

**[PART 1 - GENERAL]{.underline}**

1.01 Summary 2

1.02 Submittals. 2

**[PART 2 - PRODUCTS]{.underline}**

2.01 Sheet Metal Flashing and Trim Materials 3

2.02 Miscellaneous Materials and Accessories 3

2.03 Fabricated Units 4

**[PART 3 - EXECUTION]{.underline}**

3.01 Installation Requirements. 5

3.02 Cleaning And Protection. 5

**SPECIAL SPECIFICATION**

**SECTION 07600**

**[FLASHING AND SHEET METAL]{.underline}**

**[PART 1 - GENERAL]{.underline}**

**1.01 [SUMMARY]{.underline}**

> A. This Section includes the following:
>
> 1\. Metal wall flashing and expansion joints.
>
> 2\. Gutters and downspouts.
>
> 3\. Miscellaneous sheet metal accessories.
>
> 4\. Splashblocks.

**1.02 [SUBMITTALS]{.underline}**

> A. General: Submit the following in accordance with Section 01300.
>
> B. Product data, Flashing, Sheet Metal, and Accessories:
> Manufacturer\'s technical product data, installation instructions and
> general recommendations for each specified sheet material and
> fabricated product.

**[PART 2 - PRODUCTS]{.underline}**

**2.01 [SHEET METAL FLASHING AND TRIM MATERIALS]{.underline}**

> A. Zinc-Coated Steel: Commercial quality with 0.20 percent copper,
> ASTM A 526 except ASTM A 527 for lock-forming, G90 hot-dip galvanized,
> mill phosphatized where indicated for painting.
>
> 1\. Thickness as indicated on Drawings.

**2.02 [MISCELLANEOUS MATERIALS AND ACCESSORIES]{.underline}**

> A. Solder: For use with steel, provide 50 - 50 tin/lead solder (ASTM B
> 32), with rosin flux.
>
> B. Fasteners: Same metal as flashing/sheet metal or other non-
> corrosive metal as recommended by sheet manufacturer. Match finish of
> exposed heads with material being fastened.
>
> C. Bituminous Coating: SSPC - Paint 12, solvent-type bituminous
> mastic, nominally free of sulfur, compounded for 15-mil dry film
> thickness per coat.
>
> D. Elastomeric Sealant: Generic type recommended by manufacturer of
> metal and fabricator of components being sealed and complying with
> requirements for joint sealants as specified in Section 07900, Joint
> Sealers.
>
> E. Adhesives: Type recommended by flashing sheet manufacturer for
> waterproof/weather-resistant seaming and adhesive application of
> flashing sheet.
>
> F. 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 gage required for performance.
>
> G. Splashblock: Provide preformed concrete splashblocks.
>
> H. Gutter Guards: 20-gage bronze or nonmagnetic stainless steel mesh
> or fabricated units, with selvaged edges and noncorrosive fasteners.
> Select materials for compatibility with gutters and downspouts.
>
> I. Roofing Cement: ASTM D 2822, asphaltic.

**2.03 [FABRICATED UNITS]{.underline}**

> A. General Metal Fabrication: Shop-fabricate work to greatest extent
> possible. Comply with details shown and with applicable requirements
> of SMACNA \"Architectural Sheet Metal Manual\" and other recognized
> industry practices. Fabricate for waterproof and weather-resistant
> performance, with expansion provisions for running work, sufficient to
> permanently prevent leakage, damage, or deterioration of the work.
> Form work to fit substrates. Comply with material manufacturer
> instructions and recommendations for forming material. Form exposed
> sheet metal work without excessive oil-canning, buckling, and tool
> marks, true to line and levels indicated, with exposed edges folded
> back to form hems.
>
> B. Seams: Fabricate nonmoving seams in sheet metal with flat-lock
> seams. For metal other than aluminum, tin edges to be seamed, form
> seams, and solder. Form aluminum seams with epoxy seam sealer; rivet
> joints for additional strength where required.
>
> C. Expansion Provisions: Where lapped or bayonet-type expansion
> provisions in work cannot be used or would not be sufficiently
> water/weatherproof, form expansion joints of intermeshing hooked
> flanges, not less than 1 inch deep, filled with mastic sealant
> (concealed within joints).
>
> D. Sealant Joints: Where movable, nonexpansion type joints are
> indicated or required for proper performance of work, form metal to
> provide for proper installation of elastomeric sealant, in compliance
> with SMACNA standards.
>
> E. Separations: Provide for separation of metal from noncompatible
> metal or corrosive substrates by coating concealed surfaces at
> locations of contact, with bituminous coating or other permanent
> separation as recommended by manufacturer/fabricator.
>
> F. Shop Finish: Provide manufacturer\'s standard baked-on white
> acrylic shop finish on sheet metal (gutters and downspouts); 1.0-mil
> dry film thickness.

**[PART 3 - EXECUTION]{.underline}**

**3.01 [INSTALLATION REQUIREMENTS]{.underline}**

> A. General: Except as otherwise indicated, comply with manufacturer\'s
> installation instructions and recommendations and with SMACNA
> \"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. Bed flanges of work in a thick coat of bituminous roofing cement
> where required for waterproof performance.
>
> C. Install continuous gutter guards on gutters, arranged as hinged
> units to swing open for cleaning gutters. Install \"beehive\"-type
> strainer-guard at conductor heads, removable for cleaning downspouts.
>
> D. Provide splashblocks at each downspout.

**3.02 [CLEANING AND PROTECTION]{.underline}**

> A. Clean exposed metal surfaces, removing substances that might cause
> corrosion of metal or deterioration of finishes.
>
> B. Protection: Advise Contractor of required procedures for
> surveillance and protection of flashings and sheet metal work during
> construction to ensure that work will be without damage or
> deterioration other than natural weathering at time of Substantial
> Completion.

END OF SECTION