How To Install Modified Bitumen Roll Roofing

Step 1 prepare the roof.

How to install modified bitumen roll roofing.

To seal a plumbing vent spread roofing cement around the pipe. Stagger the position of any seams in adjacent rows. Cut a hole in a piece of roofing about 2 feet wide and slip it over the pipe. 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.

Use 1 cap nails spaced 8 to 9 apart around the perimeter and along the lap seams and 16 to 18 apart in the field of the sheet. How to install peel and stick modified bitumen roofing remove the adhesive film and carefully roll the roofing back into place. Step 2 apply the roofing felt. If your roof is in a high wind area you may wish to nail down the base sheet for extra security.

Step 3 prime the roof. Once you are done cleaning the roof make sure the. You may need to remove old flashings. Roll modified bitumen roofing sheets over the entire roof.

How to do it. Clean and insulate the roof. Start at 1 end of the roof and unroll the bitumen to the other end. How to install a modified bitumen roof.

Smooth the material out before permanently. Remove all obstructions and sweep the roof clean of debris. The piece should overlap the lower course by at least 4 inches. Repeat this with each roll until the roof is covered overlapping each sheet by about 3 8 in 0 95 cm.

Step 4 heat the roof. Using a weighted roller roll over the entire surface of your roof paying particular attention to the overlap. Get soapy water and a brush to scrub the dirt. Bitumen roofing rolls can be large and heavy so get help carrying them up to the roof if necessary.