How To Install A Modified Bitumen Flat Roof

Step 3 prime the roof.

How to install a modified bitumen flat roof.

After attaching the felt to the roof use a primer to prepare the roofing. Disadvantages of modified bitumen. Modified bitumen flat roofing is a single ply system made of asphalt bitumen modified with polymers and reinforced with fiberglass and or polyester. Flat roofs were once exclusively the province of professionals but new materials enable do it yourselfers to install flat roofs.

It is assembled in a unique permutation of layers that compound to increase the roof s effectiveness. Bitumen roof advantages and disadvantages. Another good thing is that workers can easily reach the flat surface should there be a need to perform repairs. If the surface is smooth you may be able to reroof using sheets of modified bitumen or epdm rubber roofing.

Modified bitumen is compatible with petroleum and so it is possible that it could be installed overtop of an existing tar roof unlike rubber flat roofing which would be eaten away modified bitumen roofing is also very rugged and can sustain a fair amount of foot traffic. Get a sheet of bitumen roofing and roll it out allowing an extension beyond the perimeter of the roof. There are different primers available for sealing the concrete roofs. Start at 1 end of the roof and unroll the bitumen to the other end.

Make sure the roofing is flat and free from creases and bubbles. The granular surface is somewhat more expensive at installation but it is cost effective in the long run because it doesn t need periodic recoating. If your flat roof is covered with gravel you will likely need to hire a professional to reroof it. In the final phase of a modified bitumen roof an installer torch welds a granular surface membrane to an interply sheet or directly to a base sheet.

One of the longer lasting roofing options for flat roofs is bitumen roofing or a modified bitumen roof. Every roofing system has their own drawbacks. A modified bitumen flat roof requires less maintenance as they can stand on their own for a long period of time. Roll modified bitumen roofing sheets over the entire roof.