Why Put Gravel On Roof

A layer of gravel or small stones is applied on top of the final.

Why put gravel on roof.

A flat roof typically has a rubber or asphalt impregnated membrane. These materials provide the waterproof barrier that contains and sheds the water to protect the roof structure. It provides excellent protection against uv rays and is an attractive option for windows and decks that overlook the 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.

Why install a tar gravel roofing system. 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. Also a tar and gravel roof is very rugged and safe to walk on. The fact that the gravel collects dirt and moisture can make patching the leaks just as difficult once they have been located.

Tar has a low melting point. Roofing tar will also protect your roof from wind and from snow and water which can collect on a flat roof. Gravel is an excellent fire retardant. Generally the weight for a gravel coated roof must be within 10 25 pounds per square foot.

Here alternating layers of roofing felt usually fiberglass and hot applied asphalt are combined to create a long lasting roof system. Gravel to protect built up roofs. Roofing tar is often used for tar and gravel roofs or to fix leaks on a roof. 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.

Of all the flat roofing options a tar and gravel roof is the most economical. Roofing tar is a good choice for a flat roof as this kind of material is highly resistant to the ultraviolet rays from the sun. However both rubber and asphalt will lose plasticizers and other v. 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 roof disadvantages on the other hand gravel roofs are hot energy inefficient heavy moisture trapping and unstable. A built up roof bur sometimes called a tar and gravel roof is a tried and true style of flat roof. Advantages of a tar and gravel roof.