A scupper is an opening in the side walls of a vessel or an open-air structure, which allows water to drain instead of pooling within the bulwark or gunwales of a vessel, or within the curbing or walls of a building.

What are scuppers on a roof?

This drainage system looks like an opening in the parapet or wall of your flat commercial roof. Some scuppers have a simple spout that pours water down the side of your building, while others are connected to downspouts that send the water directly to the ground level.

What are scuppers and downspouts?

Description: Scuppers are used to provide an outlet through parapet walls or gravel stops on flat and built-up roofs to allow drainage of excess water. They can be used in conjunction with gutters and downspouts to divert the flow to the desired location.