10/31/2026
A scupper is the opening through the parapet that lets water off a flat roof when the drains can't keep up.
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It's the roof's second way out. When debris packs it shut, water has nowhere to go and stands against every seam on the roof. The tell is on the outside wall, a stain running down below the opening, visible right from the parking lot.
Scupper packed with debris?
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