A roof drain passes through the roofing membrane, insulation layer, and steel deck, secured with roofing clamps and an extension piece. A receiver pan sits beneath the insulation, supported by an underdeck clamp fastened from below. The roofing membrane terminates at the drain assembly and is clamped in place.
THIS POINT INTO DRAIN AT ROOFING ROOFING CLAMPS RECEIVER PAN STEEL DECK UNDERDECK CLAMP INSULATION EXTENSION PIECE ROOF DRAIN
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