Asphalt Built Up Flat Roof

Built up roofs are manufactured using built up layers of either tar saturated paper and liquid tar with gravel asphalt rolled asphalt or modified bitumen.

Asphalt built up flat roof.

Firestone asphalt roofing delivers exceptional performance on flat and low slope commercial roofs in even the most extreme. Firestone building products manufactures traditional built up systems modified bitumen membrane systems hybrid built up and modified bitumen systems. Alternating layers of roofing felt usually fiberglass and hot applied asphalt. As the roof is installed more and more layers are added to increase durability and longevity hence the name built up.

Its installation is the most difficult compared to a cold built up roof and ballasted asphalt built up roof. A hot built up roof uses liquefied bitumen. It is composed of alternating layers of reinforcing fabric and bitumen asphalt and is finished with a top layer of aggregate such as stone or gravel. Asphalt built up refers to several layers of reinforcing felt between asphalt and plies or coal tar bitumen which are covered with a surfacing material that serves as a ballast and holds them down also reflecting uv rays.

Built up roofing also called bur is the most common roofing material used on low slope roofs. For more than a century. Bur is found in many low slope residential and commercial roofing applications. Lasts longer even in areas where the weather is constantly changing.

Built up roofing bur this multi layer roof design is a proven system that has been around for generations. They can be used on timber metal and concrete decks. A traditional bur system gets its name from the building of a roof on site using layers of base sheet interplay sheets and cap sheet or other surfacing such as gravel or liquid coating. Tar and gravel 2.

Asphalt built up is the most common form of roofing used for low sloped roofs 2 12 in america constituting a large percentage of the overall number of roofs in the united states. Learn about the variety of installation methods and roofing system options including bur built up roof sbs and app. Firestone has a long history of delivering quality asphalt roof solutions. 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.

Asphalt is one of the oldest roofing technologies still in use today and it is a reliable solution for both residential and commercial roofing needs. Built up bituminous membranes are probably the most economic and common form of roof covering material for domestic flat roofs. Built up roofing or bur systems have been used in the u s. Today s high performance felts are reinforced with polyester or glass or a mixture of the two and are coated and impregnated with bitumen.