Foam Roofing Vs Tar And Gravel

Gravel is an excellent fire retardant.

Foam roofing vs tar and gravel.

The tar and gravel roof is built up of typically three to five layers of roofing felt. Gravel is an excellent fire. The final layer of a built up roofing system consists of stone or gravel. Also a tar and gravel roof is very rugged and safe to walk on.

Most tear offs are required because of the weight of existing roofing. Foam roofs are extremely durable with high tensile and compressive strength. Flat roofing option 6. Once made of tar paper these types of roofs gradually are using more advanced materials such as fiberglass membranes.

Built up roof bur the traditional hot tar and gravel roof is built from three or more plies of waterproof material alternated with hot tar and ballasted by a layer of smooth river stone. The gravel on top of them can be even heavier. 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. 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.

Advantages of a tar and gravel roof. Spf roofing is a roofing system that is spray applied directly to the existing roof surface. Roofing tar is often used for tar and gravel roofs or to fix leaks on a roof. A plain tar and gravel roof also referred to as a built up roof or bur is quite different from modified bitumen.

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. Tar roofs are heavy. Foam roofing is the exception here as it is considered an overlay and the weight load on the structure is reduced with the foam roof installation. When you should not choose a tar gravel roof.

It provides excellent protection against uv rays and is an attractive option for windows and decks that overlook the roof. Sprayed polyurethane foam spf roofing is a probably the best of all the flat roofing options we have discussed here. Foam roofing is better than tar and gravel roofs did you know that the highest energy efficient roofing material available over 500 greater than tar gravel is foam roofing. It has a plethora of benefits associated with it and only a few drawbacks.

Of all the flat roofing options a tar and gravel roof is the most economical. While tar and gravel roofing or built up roofing systems have many positive aspects if you live in an area or the roof is in a location where it will receive strong sun exposure hot tar roofs will likely damage the roof s membrane if it is left uncovered or unevenly covered by the gravel.