It also has a layer of bitumen and an aggregate top layer.
Built up tar and gravel roof.
Tar and gravel roofs sometimes referred to as conventional built up roofing or bur roofs tar and gravel roofing is a system of flat roofing protection that is budget friendly and can have a lifespan of up to 30 years.
If you have a home with a flat roof a tar and gravel roof may be a good option for you.
Built up roof bur tar and gravel roofing built up roof bur systems or tar gravel as more commonly known in layman s terms is a multiple ply roof system consisting of plies of roofing ply sheets or felts installed on the rooftop with inter ply moppings of asphalt.
It is comprised of several layers of asphalt saturated felt which are layered in opposite directions then covered with hot asphalt roof coating.
First let s define what a tar gravel or built up roof bur is.
The standard roofing for this situation is built up from layers of hot tar and thick roofing felt and topped with a layer of gravel.
It s been used for well over 100 years.
This surface layer weighs down the built up roof protects it from sun exposure and serves as decoration.
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.
It s made up of 3 to 5 laminated layers hot tar and roofing felt.
Most houses with flat or nearly flat roofs are topped with built up roofing or tar and gravel roofing made from fiberglass based asphalt sheeting that is applied in layers with hot bitumen tar mopped on between each layer.
While the asphalt is still hot gravel is typically spread over the roof to deflect heat and light and to protect the felt and asphalt which provides the actual water proofing.