How To Install Modified Bitumen Roofing

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.

How to install modified bitumen roofing.

Modified bitumen sbs roofing systems. Roll modified bitumen roofing sheets over the entire roof. One of the primary benefits of using a modified bitumen roof is that it comes at a lower cost to install. Modified bitumen roofing may have a granular surface as shown here or it may be smooth.

One of the biggest disadvantages however is that many major commercial roofing contractors have stopped installing them mostly due to the surge in popularity of tpo roofs. No filters are available. Run the tip of the flame along the crease between the roofing felt and the roofing roll. Repeat this with each roll until the roof is covered overlapping each sheet by about 3 8 in 0 95 cm.

Modified bitumen mb roofing is an asphalt based roofing system similar to built up roofing bur designed for structures with low slope roofs. Modified bitumen roofing membranes appeared first in europe in the mid 60s and since have been used in the us and canada since the mid 70s. Learn about modified bitumen sbs roofing systems. Make sure the roofing is flat and free from creases and bubbles.

Once you see bubbles forming gently roll the roofing forward with your foot to install. If you re looking for 2020 breakdown for cost of modified bitumen roof materials and what installation cost might be you ve come to the right place. These steps show a torch down method which looks a bit scary but actually is not too difficult. Bitumen roofing rolls can be large and heavy so get help carrying them up to the roof if necessary.

If you install the smooth product cover it with aluminum coating. Modified bitumen flat roofs. Use flashings approved by your building department. Step 4 heat the roof.

As an experienced licensed home improvement contractor i know first hand what it should cost for various levels from basic better and of course the best. Get to know more about one of the most popular commercial roofing systems. Start at 1 end of the roof and unroll the bitumen to the other end. Rollback the roofing again and switch on your propane torch.

Wear protective clothing prior to this procedure. 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.