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.
Flat roof bitumen membrane.
The roof felt asphalt tar layering is repeated in overlapping layers until the assembly is two to fours plies in thickness.
The hot applied asphalt or coal tar pitch blends with the bitumen soaked roof felt and creates a monolithic roof membrane.
Bmi south africa flat roof solutions can allow you to achieve virtually any design including roof terraces solar and green roofs.
There are three types of roofing systems used for rubber membrane roofs.
Modified bitumen an asphalt based multi ply flat roofing system is considered a modern take on its close cousin bur or built up roof.
One of the longer lasting roofing options for flat roofs is bitumen roofing or a modified bitumen roof.
Built up roof bur modified bitumen roof mbr and rubber membrane roof epdm.
All three types of flat roofing cost 250 to 350 per square 100 square feet but prices vary according to region and size of the roof.
Common flat roof membranes discussed in this article include built up asphalt tar and gravel modified bitumen and single ply membranes like epdm pvc tpo and kee.
Epdm rubber membrane roofs are the most popular of all the.
Bur consists of many layers.
Pros and cons for flat roof materials.
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.
Built up roofing bur was the most common type of flat roof before modified bitumen and membrane roofing were developed.
Although tpo is a vinyl type of material we will also include it as part of this article.
Traditional membrane systems developed to offer the latest in flat roof technology on a range of building types and surfaces.
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.
What are the different types of flat roofs.
Bitumen roof advantages and disadvantages.
The breadth of bitumen we believe that finding the right solution can not only transform your roof but the building itself and the lives of the occupants.
Bitumen membranes the most robust membrane systems developed to offer the latest in flat roof technology on a range of surfaces.
Modified bitumen torch down roofing.