Installing Bitumen Roofing

Mark 12 inches up on the roof for the first course of shingles then mark every 5 inches all the way up the roof to set your reveal.

Installing bitumen roofing.

Do this on both sides of the roof. Use the chalk line to snap a straight line vertically every 6 inches. Get quotes book instantly. Start by laying asphalt felt or other underlayment over the roof.

After attaching the felt to the roof use a primer to prepare the roofing. Consult with your inspector to see whether you need to tear off the old roofing or if you can reroof over the existing roofing. Use flashings approved by your building department. Using the chalk line snap a straight line on each 5 inch increment.

There are different primers available for sealing the concrete roofs. Modified bitumen roofing may have a granular surface as shown here or it may be smooth. Install a starter course by cutting off the three tabs on a shingle leaving only the top tar section. Compare homeowner reviews from 9 top los angeles asphalt shingle roof install services.

Overlap each metal piece by at least 150 mm 6 and use asphalt plastic cement under each section of overlap. Center a minimum 610 mm 24 wide minimum 28 gauge pre finished galvanized metal valley liner in the valley and fasten with only enough nails to hold it in place nailing at the edges only. Align the next sheet of modified bitumen roofing so it covers the edge of the first sheet by a few inches and repeat the process. Overlap each row at least 3 to 4 inches.

Once you see bubbles forming gently roll the roofing forward with your foot to install. Make sure the roofing is flat and free from creases and bubbles. Run the tip of the flame along the crease between the roofing felt and the roofing roll. If you install the smooth product cover it with aluminum coating.