It shields the roof membrane.
Gravile on the roof.
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.
Every tar and gravel roof consists of multiple layers and the top layer is gravel.
Advantages of a tar and gravel roof.
Gravel is an excellent fire retardant.
By having this gravel on top the roof is held together and the gravel can protect the bottom layers from excessive sun and moisture.
The gravel you re finding has been washed down the roof through the downspouts and onto the ground.
Gravel on a ballast roof system ballast is a different style of gravel which is applied to single ply roofing systems.
If you have a home with a flat roof a tar and gravel roof may be a good option for you.
This is a surecoat systems coating how to roof r.
A tar and gravel roof is a roof that consists of asphalt sheets hot tar and roofing felt.
Tar and gravel roofs sometimes referred to as conventional built up roofing or bur roofs tar and gravel roofing is a system of flat roofing protection that is budget friendly and can have a lifespan of up to 30 years.
They are typically more difficult to service as the.
Gravel roof disadvantages on the other hand gravel roofs are hot energy inefficient heavy moisture trapping and unstable.
Also a tar and gravel roof is very rugged and safe to walk on.
Of all the flat roofing options a tar and gravel roof is the most economical.
It provides excellent protection against uv rays and is an attractive option for windows and decks that overlook the roof.
Although the primary purpose of ballast is to weigh down the roofing materials it also offers similar protective benefits as described above.