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Orange County Solid Waste <br />Scalehouse Building 07 22 16 -3 ROOF INSULATION <br />2.Tapered Insulation System: <br />a.Rigid polyisocyanurate roof insulation board complying with ASTM <br />C1289 Type II,Class 2,Grade 2 and meeting the following requirements: <br />1)Factory applied coated polymer bonded glass fiber mat facers on <br />the top and bottom. <br />2)Curing time:24 hours minimum,plus an additional 24 hours <br />minimum per inch thickness,at a minimum of 60 degrees F <br />before shipment from the manufacturer. <br />3)Dimensional stability:2 percent maximum linear change when <br />conditioned at 158 degrees F and 97 percent relative humidity <br />for seven days. <br />4)Board size:4 feet by 4 feet. <br />5)Slope:​1/4​ inch per foot <br />6)Minimum thickness:​1.5 inch​ <br />7)Fill Insulation: Rigid polyisocyanurate meeting the above <br />requirements with board size of 4 feet by 4 feet and thickness of <br />2 inches. <br />8)Crickets and Saddles: Rigid polyisocyanurate meeting the <br />above requirements with a board size of 4 feet by 4 feet and 1/2 <br />inch per foot slope. <br />3.Cover Board: <br />a.Cover board approved by roof system manufacturer. Board Size:4 feet <br />by 8 feet. Minimum thickness as listed below or as required by roof <br />system manufacturer. <br />1)Georgia Pacific 1/4 inch DensDeck Prime Roof Board <br />2)DEXcell 1/4 inch FA Glass Mat Roof Board <br />B.Insulation Accessories: <br />1.Tapered Edge Strip: <br />a.Polyisocyanurate:Closed-cell polyisocyanurate foam core integrally <br />bonded to non-asphaltic,fiber-reinforced organic felt or inorganic coated- <br />glass facers. Fabricated with 1 inch per foot slope and "zero edge"to <br />provide transitions as required by field conditions. <br />C.Insulation Mechanical Attachment Materials: <br />Docusign Envelope ID: FA2D0569-6BCE-4E38-B3EE-9B3EFD09A753