Flat Roof Modified Bitumen

Flat roofs were once exclusively the province of professionals but new materials enable do it yourselfers to install flat roofs.

Flat roof modified bitumen.

A bottom layer or two of insulation board multiple intermediate layers of tar or asphalt alternated with layers of roofing felt and a top layer of gravel. Bitumen roof advantages and disadvantages. Modified bitumen roofing was designed for use on buildings that have a low slope or flat roof. 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.

Modified bitumen sbs roofing systems. One of the longer lasting roofing options for flat roofs is bitumen roofing or a modified bitumen roof. Modified bitumen an asphalt based multi ply flat roofing system is considered a modern take on its close cousin bur or built up roof. They are similar to asphalt roofs but they have additional polymers in their materials that provide added protection from the elements and help in increase the lifespan of the product.

They come in rolls that workers apply using hot and cold temperatures. There are three application methods including heat welded cold adhesive and hot asphalt. Pros and cons for flat roof materials. Built up roofing bur was the most common type of flat roof before modified bitumen and membrane roofing were developed.

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. Built up roof bur modified bitumen roof mbr and rubber membrane roof epdm. This combination results in maximum durability. Modified bitumen is installed in multiple layers multi ply roof each of which is torched to the surface below at every turn of the roll.

Bur consists of many layers. If the surface is smooth you may be able to reroof using sheets of modified bitumen or epdm rubber roofing. Modified bitumen roof application modified bitumen roofs are single ply systems that are most often roll applied to the roof surface. Offers great flexibility impact resistance strength and system compatibility.

A modified bitumen flat roof is composed of asphalt that is reinforced with fiberglass material and other modifiers. If your flat roof is covered with gravel you will likely need to hire a professional to reroof it. Flat roofs usually come with a 10 to 20 year warranty but can last 25 years if you. Modified bitumen roofing.