Gravel Flat Roofs

Gravel roof disadvantages on the other hand gravel roofs are hot energy inefficient heavy moisture trapping and unstable.

Gravel flat roofs.

Our roof gravel is available for delivery in tunnel lift bulk bags allowing an easy method of transporting the gravel onto a roof using a crane not provided. Of course flat roofs are not flat but have a very slight roof pitch of between 1 4 to 1 2 per foot. Gravel and pea shingle have two primary purposes on a flat roof. It also provides protection from foot traffic.

Built up flat roof replacement. Bur consists of many layers. A built up flat roof bur is made up of tar and gravel. Built up roofing bur was the most common type of flat roof before modified bitumen and membrane roofing were developed.

Built up roofs or burs also called a tar and gravel roof is a well established and popular style of flat roof that is made up of alternating layers of roofing felt or fiberglass and asphalt that is applied with heat which combine to make a long lasting sturdy roofing system. Roof gravel provides a protective layer to flat roofs reducing the weather damaging effects from uv rays and heavy snow hail and wind. However if epdm roofs are spray applied then the chance of the seams pulling away from the roof is significantly lowered. There are different types and weights of gravel used on flat roofs for these purposes.

As protection the stones absorb some of the sun s. To protect the underlying layer of roofing materials as is the case with built up roofs burs. For many people the built up roof is what comes to mind when they think of flat roofs. Also a tar and gravel roof is very rugged and safe to walk on.

Gravel to protect built up. Just enough slope to drain water but also flat enough to be a problem if not constructed properly. It provides excellent protection against uv rays and is an attractive option for windows and decks that overlook the roof. Gravel is used on flat roofs for two reasons.

As ballast the gravel will help anchor the material underneath and lower the risk of it being blown off in high winds. Gravel roof advantages most gravel roofs are inexpensive to build offer some protection to vulnerable asphalt against uv damage and the stones are very durable. Of all the flat roofing options a tar and gravel roof is the most economical. Flat roofs usually come with a 10 to 20 year warranty but can last 25 years if you build the roofs right and maintain them using commonsense rules.

To weigh down or secure the roofing material as is the case with single ply flat roofs. Gravel flat roofs and pea shingle flat roofs. A bottom layer or two of insulation board multiple intermediate layers of tar or asphalt alternated with layers of roofing felt and a top layer of gravel.