How To Lay Bitumen Roof

Bitumen roofing rolls can be large and heavy so get help carrying them up to the roof if necessary.

How to lay bitumen roof.

Get a sheet of bitumen roofing and roll it out allowing an extension beyond the perimeter of the roof. Nail the roofing strips parallel to the roof edge set in 1 and 8 from the roof edge with nails spaced 4 o c. Prepare roof edges cant strips. After attaching the felt to the roof use a primer to prepare the roofing.

Clean and insulate the roof. Use your foot and gloved hand to press the seam between the two sheets ensuring a tight seal. Cut a half tab off for your first course shingles cut off a full tab for your second course shingles cut one and a half tabs off of your third course shingles cut two tabs off your fourth course shingles for your fifth course cut off half of the final tab keep your sixth course tabs intact. If you live in an area with inclement weather you should consider using a special ice and water protector.

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. Let the sheets overhang the roof s edges by at least 2 in 5 1 cm. Overlap each row at least 3 to 4 inches. Install new flashing metal.

Remove all obstructions and sweep the roof clean of debris. You may need to remove old flashings. Ask this old house general contractor tom silva reveals the best ways to secure shingles to a roof. Start by laying asphalt felt or other underlayment over the roof.

Using your staple gun secure the felt to the roof. See below for a shopping list tools and steps subscr. Unroll the roofing and cut a strip to the length necessary for your roof. A bit of melted bitumen should ooze out along the joint.

There are different primers available for sealing the concrete roofs. Make sure the roofing is flat and free from creases and bubbles. 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. Start at 1 end of the roof and unroll the bitumen to the other end.

How to do it. Repeat the process for the rest of your flat roof. Place the first strip over the starter strips but don t overlap the roof edge.