How To Install Double Layer Roofing Felt

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.

How to install double layer roofing felt. For a flat or nearly flat roof use double coverage although a torch down modified bitumen or epdm roof is a better solution. 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. Prepare the roof by tearing off the old shingles or by preparing for a reroof. A roof is one of the most vital components of a house.

I m getting new roof soon too and in the process of researching roofs i came to know this info. This video contains the. Above that is an incomplete double coverage layer of 15 pound 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.

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. The weight of the roof is of concern roof trusses and decks are only able to hold up so many layers of roofing. Taking the time to properly prepare the sheathing will make all the difference in how quickly and easily the felt paper is installed. 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.

I ve marked in red the lower edge of each course of roofing felt. 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. Replacing a roof can be very expensive and exhausting at the same time. Posted july 31 2018 by onpage marie.

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. Another great perk of tearing off is that it exposing the roof deck. Roofing felt installation details omitted felt felt specifications for various roof pitches or slopes. Installing the roofing felt does take care but can go very quickly.

Pros and cons of adding a second layer of shingles. Start the roof felt at one bottom corner of the roof.