Why Put Gravel On Roof

Generally the weight for a gravel coated roof must be within 10 25 pounds per square foot.

Why put gravel on roof.

The fact that the gravel collects dirt and moisture can make patching the leaks just as difficult once they have been located. A layer of gravel or small stones is applied on top of the final. 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. Gravel roof disadvantages on the other hand gravel roofs are hot energy inefficient heavy moisture trapping and unstable.

Here alternating layers of roofing felt usually fiberglass and hot applied asphalt are combined to create a long lasting roof system. Tar has a low melting point. 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. A flat roof typically has a rubber or asphalt impregnated membrane.

It provides excellent protection against uv rays and is an attractive option for windows and decks that overlook the roof. Gravel is an excellent fire retardant. Gravel to protect built up roofs. These materials provide the waterproof barrier that contains and sheds the water to protect the roof structure.

Roofing tar will also protect your roof from wind and from snow and water which can collect on a flat roof. 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. 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.

Advantages of a tar and gravel roof. 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 benefits of a tar and gravel roof are numerous. Of all the flat roofing options a tar and gravel roof is the most economical. 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.