How To Install Modified Bitumen Roll Roofing

Modified bitumen is approved for flat roofs with minimal slope but roll roofing is not viable below a 2 12 pitch two inches of rise for each twelve inches of horizontal run with exposed nails or a maybe little lower with concealed nail installation.

How to install modified bitumen roll roofing.

Get a sheet of bitumen roofing and roll it out allowing an extension beyond the perimeter of the roof. If you install the smooth product cover it with aluminum coating. Self adhering modified bitumen roll roofing is designed for flat roofs with a pitch or 4 12 or less typically found over shed type garages and second floor porches. As with other types of modified bitumen materials the cost may be a bit higher than traditional asphalt roll roofing but the additional price is.

Make sure the roofing is flat and free from creases and bubbles. There are different primers available for sealing the concrete roofs. Step 3 prime the roof. The beginning of a peel and stick installation starts out the same as the torch down.

After attaching the felt to the roof use a primer to prepare the roofing. Peel and stick modified bitumen roofing installation is more suitable for a diy job as there is no danger of fire and no fumes to contend with. Start the process after step 5. These steps show a torch down method which looks a bit scary but actually is not too difficult.

Modified bitumen roofing may have a granular surface as shown here or it may be smooth.