Roofing Washington, One Home at a Time
Through-wall scuppers and conductor heads that drain flat roofs where interior drains are impractical.
Scuppers give parapet-walled commercial roofs a reliable way to shed water through the wall to exterior downspouts, a proven approach for the Puget Sound's heavy rain. They are especially valuable as overflow protection when primary drains clog with fir needles and debris. We fabricate and flash scuppers to integrate seamlessly with the roof membrane and parapet coping. Correctly placed scuppers keep water from backing up and overtopping the parapet during peak storms.
Reliable drainage through parapet walls; effective overflow backup for clogged drains; custom-fabricated and flashed to the membrane; prevents water from overtopping the parapet in heavy storms
1) Assess parapet height, roof slope, and drainage needs; 2) Fabricate scuppers and conductor heads to fit; 3) Cut and flash the openings through the wall; 4) Tie the scupper flange into the roof membrane
Number and size of scuppers required; parapet wall thickness and construction; sheet metal type and finish; exterior downspout and conductor head work
Summer installation lets sealants and membrane welds cure fully before autumn rains arrive.