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Orange County Solid Waste <br />Scalehouse Building 07 22 16 -5 ROOF INSULATION <br />9.Adhere cant strips and tapered edge strips at transitions,terminations and/or <br />penetrations as detailed or required ribbons of foam adhesive​ to ensure smooth <br />transitions are provided for the roof membrane and flashings. <br />10.Provide necessary modifications to insulation system or nailers at roof edges as <br />required to ensure a flush and smooth transition is provided for the roof <br />membrane and flashing. <br />11.Make field modifications of insulation,tapered insulation,tapered edge strips and <br />cants where required to accommodate roof and flashing conditions and to <br />prevent water dams and ponding water. Ponding water at scuppers and cricket <br />valleys is not acceptable. <br />12.Ponding Water: <br />a.The ponding of water on the roof surface after installation of the roofing <br />system is not acceptable and is grounds for rejection of the roof. <br />b.Ponding is herein defined as precipitation remaining in a four-square foot <br />area or larger,1/4 inch or deeper for a period of 24 hours from the <br />termination of precipitation. <br />c.Provide modifications to insulation system to ensure proper drainage and <br />prevent standing water including but not limited to reinstallation of roof <br />system or installation of additional tapered insulation. <br />B.Tapered Insulation System: <br />1.Install tapered insulation system to provide positive slope for roof drainage <br />without ponding water. <br />2.Insulation boards may require mechanical fasteners and stress plates at slope <br />transition of crickets to minimize bridging. <br />C.Roof Drainage: <br />1.Install drainage sumps as detailed. <br />2.Carefully lay out the tapered insulation and sumps to ensure the finished roof <br />provides drainage with no ponding water. <br />3.Fabricate miter-cut sumps at roof edge to provide smooth transitions between the <br />insulation system and the roof edge blocking. <br />4.Ensure sumps provide roof drainage and prevent water dams. <br />5.Adjust insulation to ensure roof drainage and satisfactory substrates for <br />membrane and flashings. <br />6.Secure drain sump components using specified insulation fasteners or <br />adhesives. <br />7.Circular sumps and sumps that do not provide smooth transition or that create <br />standing water at the drains are not allowed. <br />D.Tapered Edge Strips: <br />Docusign Envelope ID: FA2D0569-6BCE-4E38-B3EE-9B3EFD09A753