Foam Roof Vs Tar And Gravel

Foam roofs are extremely durable with high tensile and compressive strength.

Foam roof vs tar and gravel.

The final layer of a built up roofing system consists of stone or gravel. Through out the bay area many homes were designed using flat roofs to create their unique look. Advantages of a tar and gravel roof. The tar and gravel roof is built up of typically three to five layers of roofing felt.

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. Spray polyurethane foam spf roofing. It provides excellent protection against uv rays and is an attractive option for windows and decks that overlook the 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.

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. Also a tar and gravel roof is very rugged and safe to walk on. Said another way a roof requiring r19 insulation will receive about 3 inches of polyurethane foam. Of all the flat roofing options a tar and gravel roof is the most economical.

A plain tar and gravel roof also referred to as a built up roof or bur is quite different from modified bitumen. Gravel is an excellent fire retardant. If you are looking for an alternative to tar and gravel roofs that actually incorporates. As each layer is applied and mopped down using hot tar between layers we end up with not a single membrane but a multiple ply.

The properly cleaned and prepare tar roof makes an excellent surface for a foam roof to adhere to. By texas a m laboratories. Maintaining a flat roof is much more difficult than standard pitched roofing. Foam roofing can be rated with a r value of 6 25 per inch.