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5thWall Building Diagnostics Consultants Government Services Annex <br /> District Attorney Office <br /> Roof Replacement <br /> November 2009 <br /> requirements of ASTM D737 and ASTM D1929 . Thickness shall be 3/4 inch nominal; <br /> width shall be 10 . 5 inches ; length per roll shall be 50 feet . Vent shall have a net free area <br /> of 16 . 9 square inches per lineal foot . <br /> F . Static Vent : Shall be pre-finished aluminum, low profile, square type with 8 inch diameter <br /> throat. Vent shall be fitted with screening to prevent entry of insects , birds , and small <br /> animals . Upslope portion of vent shall be sloped for drainage . <br /> G . Flashing Cement : Shall be asphalt based, non- asbestos fiber flashing cement conforming <br /> to the requirements of ASTM D4586 , Type II. <br /> H . Sealant : Shall be as specified in Section 079200 , Sealants and Caulking . <br /> 2 . 02 Manufacturers <br /> A. Materials supplied by Owens Corning, GAF Building Materials , Elk or approved equal . <br /> Be The referenced manufacturers are provided as examples of manufacturers who typically <br /> meet the requirements of these specifications and are acceptable only if they are able to <br /> provide the specified materials . The cited examples are used only to denote the quality <br /> standards of product desired and do not restrict bidders to a specific manufacturer, brand, <br /> make, or specific name . <br /> PART 3 EXECUTION <br /> 3 . 01 Inspection <br /> A . Verify that substrate is firm, secured, clean, smooth, free of depressions , waves, and <br /> properly sloped . Any loose/warped deck shall be repaired as needed . <br /> Be Verify roof openings are framed, sized, and properly located prior to installing work <br /> required in this section . <br /> C . Install materials over dry surfaces, free of ridges , warps , and voids . <br /> 3 . 02 Installation- General <br /> A . Strictly adhere to applicable manufacturer's specifications and National Roofing <br /> Contractors Association (NRCA) Standards for installation unless otherwise specified . <br /> Instructions and procedures described herein shall be considered minimum requirements <br /> for application of materials . <br /> Be Roofing work shall be coordinated with the installation of roof mounted components or <br /> work proj ecting through the roof. <br /> C . Installation shall be such that a watertight condition is maintained at all times . <br /> D . Holes over 1 inch in diameter, cracks over 1 /2 inch in width, loose knots and excessively <br /> resinous areas shall be covered with 22 gauge galvanized sheet metal . <br /> 09 -26 Asphalt Fiberglass Shingles <br /> 073113 - 3 <br />