A roof scupper is a drainage system for flat roofs that can’t rely on sloping to naturally move water through a gutter system. Scuppers are essentially small devices that work by giving the water a mechanism through which it can escape the roof without passing through the interior of the building.

Where do you place scuppers?

Scuppers are drain openings placed in areas on the side of a roof for water drainage. A scupper can be placed through a side wall, or a parapet wall, or could be on a low area on the edge of a roof.

How do roof scuppers work?

To put it simply, scuppers are openings in the outer walls or curbs along the roof line. They allow water to run through the wall via a metal box protecting and surrounding the scupper. When designed and installed in the correct manner, scuppers are usually the best value.