Felt Installed Under Rolled Roofing

Applying roofing felt first will better protect the sheathing against condensation as well as against leaking.

Felt installed under rolled roofing.

For a slightly sloped roof use the concealed nail method shown. These applications are ideal for flat roofs or protective surfaces under roof level decks. Roll roofing is a good choice for covering an existing roof. Peel seal instant waterproof repairs 3 ft w x 33 5 ft l 100 5 sq ft aluminum roll roofing.

These thick layers of roofing felt are installed by heating the back of the felt with a butane torch and then carefully applying it to the roof. A typical roof has three layers a felt layer and two layers of overlapping shingles. An air space between the wood roofing and the roof deck or the installation of wood roofing over spaced nailers or skip. Roll roofing is often installed over bare wood sheathing or sheathing that has been painted with a primer.

One msr roofing roll is usually about 36 feet long by 36 inches wide. Some roofing felts are actually glued down. But unlike an asphalt shingle roof nailed over felt directly to a roof deck a wood shingle or shake roof that has been installed using best practices includes a disposal path for water absorbed in the roof surface. If the roof is sloped you can use the exposed nail method.

Roll roofing is a lightweight roofing material that s sold in a large roll. 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. For many years roofers used asphalt saturated felt under roofing shingles. Item 154032 model ps36.

So in terms of quantity a roofing roll is about the size of one composite shingle square. Rolled roofing is easy to obtain and can be found at all home improvement stores. Installing the roofing felt does take care but can go very quickly. It has a life expectancy of anywhere from six to 10 years but it s fairly inexpensive.

Roll roofing is different. Sometimes called roofing felt underlayment roofing tar paper or roll roofing this is a layer of protection installed between the roof deck and the roofing shingles. You will need 1 10 gallon of lap not mastic cement for every roll and 2 pounds of roofing nails for every square. The roofing should overhang the eaves by inch except where you install drip edge flashing on top of the roofing along the rake edge.

It has just one layer so it goes on fast and can be installed by a homeowner. An underlayment of felt roofing is optional.