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DocuSign Envelope ID: 313DA256 -1EDE- 4396- A716- 4C53B809027E <br />JERRY M. PASSMORE CENTER ADDITION AND RENOVATION <br />HILLSBOROUGH, NORTH CAROLINA <br />3.4 INSULATION INSTALLATION <br />A. Coordinate installing membrane roofing system components so insulation is not exposed to <br />precipitation or left exposed at the end of the workday. <br />B. Comply with membrane roofing system and insulation manufacturer's written instructions for <br />installing roof insulation. <br />C. Install tapered insulation under area of roofing to conform to slopes indicated. <br />D. Install insulation under area of roofing to achieve required thickness. Where overall insulation <br />thickness is 2.7 inches (68 mm) or greater, install two or more layers with joints of each <br />succeeding layer staggered from joints of previous layer a minimum of 6 inches (150 mm) in <br />each direction. <br />E. Trim surface of insulation where necessary at roof drains so completed surface is flush and does <br />not restrict flow of water. <br />F. Install insulation with long joints of insulation in a continuous straight line with end joints <br />staggered between rows, abutting edges and ends between boards. Fill gaps exceeding 1/4 inch <br />(6 mm) with insulation. <br />1. Cut and fit insulation within 1/4 inch (6 mm) of nailers, projections, and penetrations. <br />G. Mechanically Fastened and Adhered Insulation: Install each layer of insulation and secure first <br />layer of insulation to deck using mechanical fasteners specifically designed and sized for <br />fastening specified board -type roof insulation to deck type. <br />1. Fasten first layer of insulation according to requirements in FM Approvals' "RoofNav" <br />for specified Windstorm Resistance Classification. <br />2. Set each subsequent layer of insulation in ribbons of bead - applied insulation adhesive, <br />firmly pressing and maintaining insulation in place. <br />H. Install cover boards over insulation with long joints in continuous straight lines with end joints <br />staggered between rows. Offset joints of insulation below a minimum of 6 inches (150 mm) in <br />each direction. Loosely butt cover boards together and fasten to roof deck. <br />Fasten cover boards according to requirements in FM Approvals' "RoofNav" for <br />specified Windstorm Resistance Classification. <br />3.5 MECHANICALLY FASTENED MEMBRANE ROOFING INSTALLATION <br />A. Mechanically fasten membrane roofing over area to receive roofing and install according to <br />roofing system manufacturer's written instructions. <br />For in- splice attachment, install membranes roofing with long dimension perpendicular to <br />steel roof deck flutes. <br />THERMOPLASTIC POLYOLEFIN (TPO) ROOFING (Alternate G -2) (Addendum #1) 075423 -9 <br />