This cross-section details the installation of a reinforced roof membrane over rigid insulation and roof sheathing, supported by a metal roof joist. The membrane lap joint is secured using a fastener and fastener plate installed per the manufacturer's recommendations. Sealant is applied at the joint with specific dimensional clearances, maintaining a minimum 1 1/2-inch lap and 1/2-inch minimum edge distance. The assembly rests on structural framing as specified on the structural drawings.
1 1/2" MIN. 1/2" MIN. 5 1/2" (APPX.) INSTALL PER MANUFACTURER SEALANT FASTENER & FASTENER PLATE, INSTALL PER MANUFACTURER REINFORCED MEMBRANE RIGID INSULATION ROOF SHEATHING, SEE STRUCTURAL METAL ROOF JOIST, SEE STRUCTURAL
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