How To Apply Bitumen Roofing

Asphalt shingles can be laid over cedar shakes or shingles however this is a roofing project best left to pros.

How to apply bitumen roofing.

Step 4 heat the roof. Prepare roof edges cant strips. How to install torch down modified bitumen roofing. Beveled wood pieces called horsefeathers must be laid along the thick edges of the shakes to make a fairly flat surface.

Make sure the roofing is flat and free from creases and bubbles. 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. Apply a heavy bead of asphalt cement. Cut the roofing but still maintain the allowance you ve set for it.

Apply extra heavy typically 43 pound roofing felt over the sheathing old roof or the insulation. Before you reshingle a roof read our step by step guide for adding new shingles over old ones. 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. Visit your local hardware store and ask for enough rolled roofing to fit the area of your roof.

Nail at the four corners to the end of the ridge and always add a little dab of tar to cover the nail heads. However you ll want to check with your local building department before you make any decisions. Dot the cement under and around the edge of the last ridge shingle where you removed the nail line. 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.

Rollback the roofing again and switch on your propane torch. Nail the drip edge in place using your hammer and roofing nails. Nail the roofing strips parallel to the roof edge set in 1 and 8 from the roof edge with nails spaced 4 o. Ensure your flat roof is entirely clear of debris.

Get a sheet of bitumen roofing and roll it out allowing an extension beyond the perimeter of the roof. 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. 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. Yes you can install a metal roof over shingles.

Also apply asphalt cement over the nail heads exposed on the last ridge shingle to prevent water.