The final layer of a built up roofing system consists of stone or gravel.
Foam roofing vs tar and gravel.
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.
Foam roofs are extremely durable with high tensile and compressive strength.
Advantages of a tar and gravel roof.
Did you know that the highest energy efficient roofing material available over 500 greater than tar gravel is foam roofing.
According to experienced and knowledgeable corpus christi tx roofing contractors modified bitumen is the successor to traditional tar and gravel roofs.
Of all the flat roofing options a tar and gravel roof is the most economical.
It has a plethora of benefits associated with it and only a few drawbacks.
Foam roofing can be rated with a r value of 6 25 per inch.
A built up roof bur sometimes called a tar and gravel roof is a tried and true style of flat roof.
Similar to a pebble beach or gravel ground garden flat roofs with tar and gravel are pleasing to the eyes.
When you should not choose a tar gravel roof.
Tar roofs are heavy.
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.
Through out the bay area many homes were designed using flat roofs to create their unique look.
Spf roofing is a roofing system that is spray applied directly to the existing roof surface.
Here alternating layers of roofing felt usually fiberglass and hot applied asphalt are combined to create a long lasting roof system.
Maintaining a flat roof is much more difficult.
However with effective tar and gravel roof maintenance you can get 30 years from the roof.
Sprayed polyurethane foam spf roofing is a probably the best of all the flat roofing options we have discussed here.
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 is the exception here as it is considered an overlay and the weight load on the structure is reduced with the foam roof installation.
Flat roofing option 6.
Spray polyurethane foam spf roofing.
The gravel on top of them can be even heavier.
It provides excellent protection against uv rays and is an attractive option for windows and decks that overlook the roof.
All roofing materials can offer this particular perk but the most affordable ones are modified bitumen roofs and tar and gravel or built up roofing bur.
Most tear offs are required because of the weight of existing roofing.
Your tar and gravel roof is a good.
