How To Install Double Layer Roofing Felt

I m getting new roof soon too and in the process of researching roofs i came to know this info.

How to install double layer roofing felt.

Roofing felt installation details omitted felt felt specifications for various roof pitches or slopes. Working with a helper expect to spend half a day installing flashings and roll roofing for a 700 square foot roof with modest complications. If you have done some serious research on roofing then you have probably heard about adding a second layer of shingles on top of the old ones. Start the roof felt at one bottom corner of the roof.

Prepare the roof by tearing off the old shingles or by preparing for a reroof. Posted july 31 2018 by onpage marie. 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. For comp asphalt shingle based roofs with a low pitch under 4 12 like 3 12 2 12 with minimum at 2 12 the recommendation and sometimes by code per city county state or to not void shingle manufacturer warranty you need either 2 layers of felt or 1 layer of the ice water shield covering.

Pros and cons of adding a second layer of shingles. My photo of an asphalt roof installation in process shows that the contractor has installed a peel and stick waterproof ice and water shield type product along the roof eaves in a 36 wide strip. This video contains the. Above that is an incomplete double coverage layer of 15 pound roofing felt.

Adding more weight than your roof is designed for can cause structural damage to the building and cause a dangerous situation for anyone in it. For a flat or nearly flat roof use double coverage although a torch down modified bitumen or epdm roof is a better solution. Another great perk of tearing off is that it exposing the roof deck. The weight of the roof is of concern roof trusses and decks are only able to hold up so many layers of roofing.

Installing the roofing felt does take care but can go very quickly. Tack it in place at the corner with the end flush with the end of the roof and the bottom edge of the roll right along the bottom of the roof. As by the use of pitch sodium silicate or the like a layer of asbestos upon a layer of roofing felt but this increases. I ve marked in red the lower edge of each course of roofing felt.

Roofing felt is comprised of a base made from natural materials such as wood cellulose or synthetic ones such as fiberglass or polyester and then coated or saturated with a protective coating such as bitumen asphalt which repels water but still allows the product to breathe. A roof is one of the most vital components of a house.