A roof scupper assembly penetrates a parapet wall with a pre-coated roofing membrane scupper box. The unit features three-inch flanges for waterproofing integration and a one-half-inch drip edge at the exterior discharge. A fully soldered galvanized scupper box ensures watertight construction. Spray foam sealant is specified around the parapet penetration. The adjacent roof slope is detailed at one-quarter inch per foot.
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