Scupper

Definition

A scupper is an opening through which water can drain from the edge of a flat roof. It is also an opening cut through a wall system or parapet to discharge water from the roof.

Purpose

The purpose of a scupper is to provide a drainage outlet for flat or low-slope roofs, preventing water accumulation and potential water damage by directing water away from the roof surface.

Examples of Use

• Commercial buildings with flat roofs use scuppers to manage rainwater runoff and prevent pooling.
• Residential homes with parapet walls may have scuppers to ensure proper roof drainage and avoid water damage.
• Roof gardens and green roofs incorporate scuppers to handle excess water runoff effectively.

Related Terms

• Downspout: A pipe that carries rainwater from a gutter down to the ground or drainage system.
• Gutter: A channel installed along the roof edge to collect and direct rainwater away from the building.
• Drainage System: A system designed to remove excess water from a roof, site, or structure.

Notes

Proper design and installation of scuppers are essential for effective roof drainage, preventing leaks and structural damage.