How To Install A Modified Bitumen Flat Roof

Repeat this with each roll until the roof is covered overlapping each sheet by about 3 8 in 0 95 cm.

How to install a modified bitumen flat roof.

Step 3 prime the roof. Get a sheet of bitumen roofing and roll it out allowing an extension beyond the perimeter of the roof. Make sure the roofing is flat and free from creases and bubbles. Disadvantages of modified bitumen.

Every roofing system has their own drawbacks. 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. Flat roofs were once exclusively the province of professionals but new materials enable do it yourselfers to install flat roofs. 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.

Start at 1 end of the roof and unroll the bitumen to the other end. Bitumen roof advantages and disadvantages. One of the longer lasting roofing options for flat roofs is bitumen roofing or a modified bitumen roof. There are different primers available for sealing the concrete roofs.

It is assembled in a unique permutation of layers that compound to increase the roof s effectiveness. 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. Another good thing is that workers can easily reach the flat surface should there be a need to perform repairs. If your flat roof is covered with gravel you will likely need to hire a professional to reroof it.

Bitumen roofing rolls can be large and heavy so get help carrying them up to the roof if necessary. Modified bitumen flat roofing is a single ply system made of asphalt bitumen modified with polymers and reinforced with fiberglass and or polyester. Roll modified bitumen roofing sheets over the entire roof. If the surface is smooth you may be able to reroof using sheets of modified bitumen or epdm rubber roofing.