Built up roofs have been popular for a long time because in addition to being attractive they re also efficient insulators.
Flat roof installation over tar and gravel.
Here alternating layers of roofing felt usually fiberglass and hot applied asphalt are combined to create a long lasting roof system.
A built up roof bur sometimes called a tar and gravel roof is a tried and true style of 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.
Flat roofs usually come with a 10 to 20 year warranty but can last 25 years if you build the roofs right and maintain them using commonsense rules.
If you re looking for 2020 breakdown for cost of tar and gravel roof materials and what installation cost might be you ve come to the right place.
This is an image of an old build up roof that has gravel spread over it.
Getting a new roof installed is a major investment especially in the case of tar and gravel flat roofing systems which many require significant maintenance or tar roof repair over the course of their existence which can extend for several decades.
This is what the two ply modified bitumen torch down looks like after installing it directly over tar and gravel.
Built up flat roofs are very sturdy.
It provides excellent protection against uv rays and is an attractive option for windows and decks that overlook the roof.
Advantages of a tar and gravel roof.
Existing old hot tar and gravel roofs.
A rubber roof installation directly over asphalt and gravel.
This type of roofing system will last 40 years and beyond.
Gravel is an excellent fire retardant.
There are still some old tar and gravel roofs in existence.
This video explains the method of installation of a torch down rubber roof over tar and gravel.
For many people the built up roof is what comes to mind when they think of flat roofs.
Instead of removing the old roofing system a new torch down rubber roof installation can be achieved over the existing with a considerable cost saving.
Built up flat roof replacement.
Also a tar and gravel roof is very rugged and safe to walk on.