Foam Roof Vs Tar And Gravel

It provides excellent protection against uv rays and is an attractive option for windows and decks that overlook the roof.

Foam roof vs tar and gravel.

Maintaining a flat roof is much more difficult than standard pitched roofing. If you are looking for an alternative to tar and gravel roofs that actually incorporates. Your tar and gravel roof is a good. The surface texture of a foam roof applied over an existing tar roof is more uniform than if the tar roof were removed.

Of all the flat roofing options a tar and gravel roof is the most economical. Foam roofing can be rated with a r value of 6 25 per inch. 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. 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.

The final layer of a built up roofing system consists of stone or gravel. The properly cleaned and prepare tar roof makes an excellent surface for a foam roof to adhere to. Foam roofs are extremely durable with high tensile and compressive strength. 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. Also a tar and gravel roof is very rugged and safe to walk on. A foam roof applied directly on a wood deck transmits noise into the homes interior.

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. Gravel is an excellent fire retardant. Spray polyurethane foam spf roofing. Through out the bay area many homes were designed using flat roofs to create their unique look.