Gravel Membrane Roof

Tar and gravel first let s talk about what makes a good tar and gravel roof work.

Gravel membrane roof.

This acts as an adhesive when it cools. As a general rule if 25 of the roof is covered with patches. Common flat roof membranes discussed in this article include built up asphalt tar and gravel modified bitumen and single ply membranes like epdm pvc tpo and kee. A single ply rolled roof similar to ice and water shield but impregnated with a mineral based wear surface.

We also cover spray applied foam and liquid roofing options. Two common alternatives to tar and gravel are two ply membrane assembly and standing seam hidden fastener metal panels. Gravel can clog gutters and scuppers. Chances are however you will have to replace the rubber as well n nwork steadily and take frequent breaks.

Modified bitumen roofs are a mix of asphalt and rubber with a layer of gravel embedded in the top layer of material during manufacture to provide uv protection. Some commercial single ply roofs are ballasted with gravel this report does not apply to these gravel roof advantages. The gravel also acts as a protective measure to prevent natural debris such as leaves from flowing towards and clogging the drains of the flat roof instead trapping them in place. Pea gravel crushed rock and decorative rock white quartz are often dispersed into a flood coat of hot asphalt and applied over the top of the roof membrane.

If the patching has not been done correctly these areas are likely to leak again. Torch down systems involve heating the adhesive as the material is unrolled. However if you re evaluating a tar and gravel roof on a prospective home many patches may indicate past leaks or weak areas. If you choose to just remove the tar and the gravel from the roof without the membrane extra skill and experience is needed to avoid marring the rubber.

All in total the installation of a pvc roofing membrane such as the one from ib roof residential and commercial vendor or sika sarnafil mostly commercial and industrial systems vendor will cost between 7 50 and 15 00 per square foot installed depending on the installer membrane type scope of the project roof accessibility and. Membrane roofing is often used on commercial flat roofs. Older tar and gravel roof can be fixed by patching the roofing membrane. If you have a tar and gravel low slope roof typical of constructions in many areas in montreal you may consider changing the roofing material to something else.