Flat Roof Gravel Stop Detail

What is a gravel stop.

Flat roof gravel stop detail.

The lapped joint on the horizontal flange is set in mastic or elastic sealant. The gravel stop system incorporates a standard 3 deep 90 roof flange that easily accepts stripped in membrane roofing products. Gravel stop is offered in a wide variety of materials gauges and colors. The gravel stop system includes a continuous 22 ga steel cleat with roof flange for easier installation and proper location and is pre punched with slotted fastener holes.

It is made up of alternating layers of roofing felt or fiberglass and asphalt that is applied with heat. Gravel stop edge metal is custom fabricated to any measurements and it usually measures 10 in length but can also be bent in 12 lengths. They combine to make a long lasting sturdy roofing system 1. This type of edge metal is designed for installation on flat rubber roofs with gravel.

Built up roofs or burs also called a tar and gravel roof are a style of flat roof. The sheets are fastened to the roof deck by nails spaced 3 o c. The ends are lapped 3 minimum. This system easily incorporates sump and spill outs as required.

The copper apron extends 4 onto the roof deck. Atas gravel stop is provided in 12 0 lengths with interior splice plates and required ring shank nails for a quick and easy installation. Membrane coated roof flange enables welding a separate skirt to both the flange and the installed roof membrane to provide a watertight seal. A version utilizing uncoated metal roof flanges is available for use in an epdm roofing system.

Gravel stops are in general about 3 4 high and formed from copper sheet 8 to 10 feet long. A gravel stop is a metal edge that features an angled bend at the top.