How To Apply Bitumen Roofing

Rollback the roofing again and switch on your propane torch.

How to apply bitumen roofing. Make sure the roofing is flat and free from creases and bubbles. However you ll want to check with your local building department before you make any decisions. Yes you can install a metal roof over shingles. Asphalt shingles can be laid over cedar shakes or shingles however this is a roofing project best left to pros.

Ensure your flat roof is entirely clear of debris. Due to the inherent danger of fire especially around felting and petroleum products the torch down method of installation for modified bitumen roofing should only be performed by a qualified roofer. Apply extra heavy typically 43 pound roofing felt over the sheathing old roof or the insulation. Nail the roofing strips parallel to the roof edge set in 1 and 8 from the roof edge with nails spaced 4 o.

How to install torch down modified bitumen roofing. Visit your local hardware store and ask for enough rolled roofing to fit the area of your roof. Building officials in some areas will only allow a re roof over one layer of shingles while officials in other places may allow you to place the roof over two layers of shingles. Nail the drip edge in place using your hammer and roofing nails.

To apply rolled roofing you ll need your roof measurements a broom chalk to mark lines a razor blade to cut the material roofing cement nails and a hammer to hold down the material. Drive cap nails 6 to 8 inches apart in rows along the top and bottom of the sheets as well as in a row in the middle. Prepare roof edges cant strips. Roofing contractor jack viera demonstrates installing three tab asphalt roof shingles.

Dot the cement under and around the edge of the last ridge shingle where you removed the nail line. Apply a heavy bead of asphalt cement. Cut the roofing but still maintain the allowance you ve set for it. Also apply asphalt cement over the nail heads exposed on the last ridge shingle to prevent water.

Beveled wood pieces called horsefeathers must be laid along the thick edges of the shakes to make a fairly flat surface. Nail at the four corners to the end of the ridge and always add a little dab of tar to cover the nail heads. Install drip edge and install 9 cant strips of roll roofing material along the rake and eaves edges gable ends and lower roof edge such that the roofing strip overhangs the roof deck by 1 4 to 3 8. Always install flashing around a chimney and other valleys where two roof planes meet as these areas are more prone to leaks if not protected.

Before you reshingle a roof read our step by step guide for adding new shingles over old ones.