Foam Roofing Vs Tar And Gravel

Roofing tar is often used for tar and gravel roofs or to fix leaks on a roof.

Foam roofing vs tar and gravel.

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. Gravel is an excellent fire retardant. It provides excellent protection against uv rays and is an attractive option for windows and decks that overlook the roof. Roofing tar will also protect your roof from wind and from snow and water which can collect on a flat roof.

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. Pros and cons of roofing tar. Spf roofing is a roofing system that is spray applied directly to the existing roof surface. Foam roofs are extremely durable with high tensile and compressive strength.

Advantages of a tar and gravel roof. Sprayed polyurethane foam spf roofing is a probably the best of all the flat roofing options we have discussed here. 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. Of all the flat roofing options a tar and gravel roof is the most economical.

Tar roofs are heavy. Spray polyurethane foam spf roofing. Once made of tar paper these types of roofs gradually are using more advanced materials such as fiberglass membranes. The final layer of a built up roofing system consists of stone or gravel.

The tar and gravel roof is built up of typically three to five layers of roofing felt. 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. The gravel on top of them can be even heavier. It has a plethora of benefits associated with it and only a few drawbacks.

When you should not choose a tar gravel roof. Also a tar and gravel roof is very rugged and safe to walk on. Flat roofing option 6. Most tear offs are required because of the weight of existing roofing.

A plain tar and gravel roof also referred to as a built up roof or bur is quite different from modified bitumen. 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.