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.

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. Step 3 prime the roof. The beginning of a peel and stick installation starts out the same as the torch down. 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.

These steps show a torch down method which looks a bit scary but actually is not too difficult. Start the process after step 5. If you install the smooth product cover it with aluminum coating. 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.

Roll roofing and modified bitumen are both suitable for low slope roofs. Make sure the roofing is flat and free from creases and bubbles. How to install peel and stick modified bitumen roofing. After attaching the felt to the roof use a primer to prepare the roofing.

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