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Gateway Park Center PERKINS+WILL <br /> 810495.000 <br /> 12/06/18 <br /> <br /> <br />STYRENE-BUTADIENE-STYRENE (SBS) MODIFIED BITUMINOUS MEMBRANE ROOFING <br /> 07 52 16 - 7 <br /> <br /> <br />B. Fasteners: Factory-coated steel fasteners and metal or plastic plates complying <br />with corrosion-resistance provisions in FM Approvals 4470, designed for fastening <br />substrate board to roof deck. <br />2.8 ROOF INSULATION <br />A. General: Preformed roof insulation boards, manufactured or approved by roof <br />membrane manufacturer, approved for use in FM Approvals' RoofNav listed roofing <br />system identical to that used for this Project. <br />B. Polyisocyanurate Board Insulation: ASTM C 1289, Type II, Class 1, Grade 3, felt or <br />glass-fiber mat facer on both major surfaces. <br />1. Manufacturers: Subject to compliance with requirements, provide products by <br />one of the following: <br />a. Atlas EPS; a Division of Atlas Roofing Corporation. <br />b. Atlas Roofing Corporation. <br />c. Carlisle SynTec Incorporated. <br />d. CertainTeed Corporation. <br />e. Dyplast Products. <br />f. Firestone Building Products. <br />g. GAF. <br />h. Hunter Panels. <br />i. Insulfoam-a division of Carlisle Construction Materials Inc. <br />j. Johns Manville; a Berkshire Hathaway company. <br />k. Rmax, Inc. <br />2. Compressive Strength: 25 psi. <br />3. Size: 48 by 48 inches. <br />4. Thickness: <br />a. Base Layer: 1-1/2 inches. <br />b. Upper Layer: 2 inches. <br />C. Tapered Insulation: Provide factory-tapered insulation boards. <br />1. Material: Match roof insulation. <br />2. Minimum Thickness: 1/4 inch. <br />3. Slope: <br />a. Roof Field: 1/4 inch per foot unless otherwise indicated on Drawings. <br />b. Saddles and Crickets: 1/2 inch per foot unless otherwise indicated on <br />Drawings. <br />2.9 INSULATION ACCESSORIES <br />A. General: Roof insulation accessories recommended by insulation manufacturer for <br />intended use and compatibility with other roofing system components.