Foam Roof Vs Tar And Gravel

Spray polyurethane foam spf roofing.

Foam roof vs tar and gravel.

A foam roof applied directly on a wood deck transmits noise into the homes interior. If you are looking for an alternative to tar and gravel roofs that actually incorporates. The final layer of a built up roofing system consists of stone or gravel. Gravel is an excellent fire retardant.

In 1974 dissatisfied with performance of traditional tar and gravel built up roofing bur systems the physical plant department began looking for viable roofing alternatives the bur roofs were constantly leaking and because of the nature of bur leak detection was virtually impossible. It provides excellent protection against uv rays and is an attractive option for windows and decks that overlook the roof. Of all the flat roofing options a tar and gravel roof is the most economical. Through out the bay area many homes were designed using flat roofs to create their unique look.

The surface texture of a foam roof applied over an existing tar roof is more uniform than if the tar roof were removed. The properly cleaned and prepare tar roof makes an excellent surface for a foam roof to adhere to. Maintaining a flat roof is much more difficult than standard pitched roofing. A plain tar and gravel roof also referred to as a built up roof or bur is quite different from modified bitumen.

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. Advantages of a tar and gravel roof. The tar and gravel roof is built up of typically three to five layers of roofing felt. By texas a m laboratories.

Said another way a roof requiring r19 insulation will receive about 3 inches of polyurethane foam. Your tar and gravel roof is a good. Spray polyurethane foam more commonly referred to as spf is a liquid that is sprayed on the existing roof and expands into a foam creating a solid layer across an existing roof. Foam roofing can be rated with a r value of 6 25 per inch.