A roof drain and overflow installation is set into metal decking with tapered insulation and a TPO membrane adhered via TPO bonding adhesive. Each drain assembly incorporates a strainer basket, a compression ring, a combined flashing clamp and gravel stop, and an underdeck clamp secured beneath the metal deck. A polyvinyl chloride standpipe extends from the overflow drain assembly. A continuous bead of sealant is applied at the membrane termination to maintain watertight integrity.
P.V.C. STANDPIPE COMBINED FLASHING CLAMP AND GRAVEL STOP UNDERDECK CLAMP METAL DECKING UNDERDECK CLAMP CONTINUOUS BEAD TAPERED INSULATION TPO BONDING ADHESIVE COMPRESSION RING STRAINER BASKET
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