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.

Bitumen roofing rolls can be large and heavy so get help carrying them up to the roof if necessary. Make sure the roofing is flat and free from creases and bubbles. A modified bitumen flat roof requires less maintenance as they can stand on their own for a long period of time. Start at 1 end of the roof and unroll the bitumen to the other end.

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. Bitumen roof advantages and disadvantages. Modified bitumen flat roofing is a single ply system made of asphalt bitumen modified with polymers and reinforced with fiberglass and or polyester. It is assembled in a unique permutation of layers that compound to increase the roof s effectiveness.

If your flat roof is covered with gravel you will likely need to hire a professional to reroof it. Flat roofs were once exclusively the province of professionals but new materials enable do it yourselfers to install flat roofs. 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. 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.

Another good thing is that workers can easily reach the flat surface should there be a need to perform repairs. After attaching the felt to the roof use a primer to prepare the roofing. Every roofing system has their own drawbacks. Roll modified bitumen roofing sheets over the entire roof.

One of the longer lasting roofing options for flat roofs is bitumen roofing or a modified bitumen roof. Disadvantages of modified bitumen. Step 3 prime the roof. 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.