Asphalt Flat Roof Covering

Modified bitumen roofs use an asphalt membrane as the base of the roof itself.

Asphalt flat roof covering.

The rolled asphalt roof covering is similar to putting asphalt shingles on your roof. The roof felt asphalt tar layering is repeated in overlapping layers until the assembly is two to fours plies in thickness. Data and information is provided for information purposes only and is not intended for trading purposes. It consists of multiple layers of tarpaper rolled in asphalt and applied to the roof.

As the roof is installed more and more layers are added to increase durability and longevity hence the name built up. I ve seen and worked on many asphalt roofs that are at least 40 years old. Twin home experts review on sure coat white reflective coating system for flat roofs. Asphalt is heated in an asphalt boiler and laid while still hot onto the roof trowelled into shape and cools to form a very hard durable roof.

No roof should be completely flat or it won t shed water. There are many different types of flat roof coverings here s a breakdown of them. We ve also shared a few steps on how to apply it to your own roof. Cost roughly a 20 30 more than a torch on roof see our flat roof pricepage.

Burs consisted of alternative layers of heavy building paper and hot tar. This surface is susceptible to cracking and blistering which reduces the typical lifespan to just 10 to 15 years. 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. As we will see below the epdm rubber roof has largely emerged as the flat roof of choice due to its ease of installation and relatively low cost.

Greenspec accepts no responsibility or liability for any damages or costs of any type arising out of or in any way connected with your use of this web site. Flat roof covering membranes on greenspec. A wear surface of finely crushed stone granules is usually applied to the top layer of hot tar to protect the built up roof assembly from uv light and weather. There are many different types of flat roof coverings mineral felt torch on felt mastic asphalt grp and fibreglass pvc single ply membrane tpo single ply membrane thermoplastic polyolefin and epdm single ply membrane elastometric membranes.

At one time built up roofs burs once represented half of all flat roof coverings.