Modified Bitumen Black Flat Roof

Bitumen roof advantages and disadvantages.

Modified bitumen black flat roof.

This surface is susceptible to cracking and blistering which reduces the typical lifespan to just 10 to 15 years. Modified bitumen is a type of asphalt product that can be applied in a number of ways to the roof in both hot and cold temperatures. The application for membrane roofs is most commonly seen for commercial buildings though they are becoming increasingly common in residential buildings. One of the longer lasting roofing options for flat roofs is bitumen roofing or a modified bitumen roof.

But flat roof is a convenient term for a class of multimembrane systems with very shallow pitches. It is assembled in a unique permutation of layers that compound to increase the roof s effectiveness. They come in rolls that workers apply using hot and cold temperatures. Modified bitumen roofs use an asphalt membrane as the base of the roof itself.

Just because a roof is classified as a flat roof that is a roof with a slope of less the 2 12 does not mean it is a modified bitumen roof. Modified bitumen flat roofing is a single ply system made of asphalt bitumen modified with polymers and reinforced with fiberglass and or polyester. Bur compliant with heavy foot traffic but very heavy. Modified bitumen multi layers but also heat absorbing and difficult to install.

Modified bitumen roofing was designed for use on buildings that have a low slope or flat roof. Modified bitumen cap sheet roofing was developed in the 1960s as a replacement technology for bur or built up roofing by using the proven technology of bur but also adding polymer reinforced roof wear layers or cap sheets. While the lifespan is less than the more advanced options the price point alone can make modified bitumen one of the best flat roof materials for some. Modified bitumen is an evolution of asphalt roofing and they are made using asphalt along with a variety of rubber modifiers and solvents.

Silicon spray seamless installation but costly. At one time built up roofs burs. No roof should be completely flat or it won t shed water. Modified bitumen roofing.

To properly identify a modified bitumen roof you can look at the featured image of this post or the pictures below. Modified bitumen flat roofs this manufactured asphalt based flat roofing is durable resistant to damage and easy to repair. A flat roof is not flat it just has a very low slope. Advantages there are a wide range of methods available for installing modified bitumen roofing from using a hot torch to using a sealant backed peel and stick rolls.