How To Apply Bitumen Roofing

How to install torch down modified bitumen roofing.

How to apply bitumen roofing.

Rollback the roofing again and switch on your propane torch. Nail the roofing strips parallel to the roof edge set in 1 and 8 from the roof edge with nails spaced 4 o. Before you reshingle a roof read our step by step guide for adding new shingles over old ones. Get a sheet of bitumen roofing and roll it out allowing an extension beyond the perimeter of the 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. 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. Apply a heavy bead of asphalt cement. 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.

Ensure your flat roof is entirely clear of debris. Roofing contractor jack viera demonstrates installing three tab asphalt roof shingles. Also apply asphalt cement over the nail heads exposed on the last ridge shingle to prevent water. 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 new flashing metal flashing is often called drip edge along the bottom of the roof near your gutters. Visit your local hardware store and ask for enough rolled roofing to fit the area of your roof. 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. Nail the drip edge in place using your hammer and roofing nails.

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. Yes you can install a metal roof over shingles. Make sure the roofing is flat and free from creases and bubbles. Beveled wood pieces called horsefeathers must be laid along the thick edges of the shakes to make a fairly flat surface.

However you ll want to check with your local building department before you make any decisions. Apply extra heavy typically 43 pound roofing felt over the sheathing old roof or the insulation. Prepare roof edges cant strips. Step 4 heat the roof.

Dot the cement under and around the edge of the last ridge shingle where you removed the nail line.