However when the flat roofing installation is up to very high standards it can add a few years to the life.
Is a flat roof also a built up.
The build up roof.
As you might imagine this is the cheapest version possible and good for covering a shed.
Built up roofs or burs also called a tar and gravel roof is a well established and popular style of flat roof that is made up of alternating layers of roofing felt or fiberglass and asphalt that is applied with heat which combine to make a long lasting sturdy roofing system.
Built up roofing bur built up roofing bur was the most common type of flat roof before modified bitumen and membrane roofing were developed.
That is because it s not only the quality of the roof installed that matters with the addition of a professional touch you will have a roof that will serve you for 20 years or more.
Also known as the built up roof bur this type of flat roof features three or more layers of waterproof material mixed in an alternating fashion with hot tar and a layer of smooth stone like gravel.
Flat roofs exist all over the world and each area has its own tradition or preference for materials used.
Bur consists of many layers.
In warmer climates where there is less rainfall and freezing is unlikely to occur many flat roofs are simply built of masonry or concrete and this is good at keeping out the heat of the sun and cheap and easy to build where timber is not readily available.
A gravel and tar built up roof is exactly that layers of gravel and asphalt laminated felt on top of a flat roof.