Maintaining a flat roof is much more difficult.
Foam roofing vs tar and gravel.
Said another way a roof requiring r19 insulation will receive about 3 inches of polyurethane foam.
Most tear offs are required because of the weight of existing roofing.
The average tar and gravel roof life expectancy is 20 25 years on average.
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.
According to experienced and knowledgeable corpus christi tx roofing contractors modified bitumen is the successor to traditional tar and gravel roofs.
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.
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.
Similar to a pebble beach or gravel ground garden flat roofs with tar and gravel are pleasing to the eyes.
The final layer of a built up roofing system consists of stone or gravel.
Did you know that the highest energy efficient roofing material available over 500 greater than tar gravel is foam roofing.
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.
Advantages of a tar and gravel roof.
Foam roofing can be rated with a r value of 6 25 per inch.
Flat roofing option 6.
Also a tar and gravel roof is very rugged and safe to walk on.
It provides excellent protection against uv rays and is an attractive option for windows and decks that overlook the roof.
Your tar and gravel roof is a good.
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.
When you should not choose a tar gravel roof.
The gravel on top of them can be even heavier.
Through out the bay area many homes were designed using flat roofs to create their unique look.
A built up roof bur sometimes called a tar and gravel roof is a tried and true style of flat 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.
Here alternating layers of roofing felt usually fiberglass and hot applied asphalt are combined to create a long lasting roof system.
Tar roofs are heavy.
Spray polyurethane foam spf roofing.
Gravel is an excellent fire retardant.
