Why Put Gravel On Roof

Roofing tar is often used for tar and gravel roofs or to fix leaks on a roof.

Why put gravel on roof.

They tend to have a lifespan of around 20 to 25 years depending the location and the structure of the rest of the property barring any major natural disasters of course. A built up roof bur sometimes called a tar and gravel roof is a tried and true style of flat roof. A flat roof typically has a rubber or asphalt impregnated membrane. Of all the flat roofing options a tar and gravel roof is the most economical.

Advantages of a tar and gravel roof. 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. Gravel is an excellent fire retardant. These materials provide the waterproof barrier that contains and sheds the water to protect the roof structure.

Talk to ten roofing contractors and you ll get ten answers on what the gravel is for but this seems to be the consensus. Gravel to protect built up roofs. Also a tar and gravel roof is very rugged and safe to walk on. It provides excellent protection against uv rays and is an attractive option for windows and decks that overlook the roof.

The benefits of a tar and gravel roof are numerous. Gravel roof disadvantages on the other hand gravel roofs are hot energy inefficient heavy moisture trapping and unstable. Pros and cons of roofing tar. Tar has a low melting point.

A layer of gravel or small stones is applied on top of the final. Finding a leak in a sea of gravel can be very difficult even more difficult if the gravel has been set in a layer of hot asphalt. The fact that the gravel collects dirt and moisture can make patching the leaks just as difficult once they have been located. Why install a tar gravel roofing system.

Generally the weight for a gravel coated roof must be within 10 25 pounds per square foot. However both rubber and asphalt will lose plasticizers and other v. In a typical tar and gravel roof which by the way is gradually being supplanted by gravelless roof systems you put down a layer of tar paper then tar and finally gravel.