Stop, Gravel

Definition

A gravel stop is a metal flange or strip with a vertical lip placed around the edge of a built-up roof to prevent loose gravel from falling off the roof.

Purpose

The purpose of a gravel stop is to contain and secure the gravel used as ballast or surfacing on a built-up roof, preventing it from washing away or blowing off and ensuring proper roof performance.

Examples of Use

• Commercial buildings with built-up roofs use gravel stops to keep the gravel in place and maintain roof integrity.
• Industrial facilities employ gravel stops to protect roof surfaces and ensure effective drainage.
• Flat-roofed residential structures incorporate gravel stops to secure the gravel layer and enhance roof longevity.

Related Terms

• Roof Edge: The perimeter of a roof where the roofing material meets the edge.
• Built-up Roof: A type of roof consisting of multiple layers of roofing felt and bitumen, topped with a layer of gravel or aggregate.
• Roof Flashing: Material used to seal and protect joints in a roof from water penetration.

Notes

Gravel stops are essential components of built-up roofing systems, providing stability and protection for the gravel layer and contributing to the overall performance and lifespan of the roof.