How To Waterproof Roofing Felt

On top of this it is one of the simplest forms of roofing to install as anyone who can use a few basic hand tools can replace the entire roof of their shed in a few short hours.

How to waterproof roofing felt.

Yet despite these potential issues with shed roof felt it still makes an excellent way to waterproof your wood shed roof when you are working on a budget. Start the roof felt at one bottom corner of the roof. If the roof felt tears cut a piece large enough to cover the tear with lots of overlap slip the top under the next lap. Pour about a gallon of elastomeric coating from your bucket onto the roof and begin spreading with your paint roller.

Roofing felt that has gotten wet can be covered with shingles as long as it is allowed to dry out first the surface underneath did not get wet and it did not wrinkle bubble or rip. First use some liquid rubber mastic adhesive to fill small gaps then apply liquid rubber tape to cover joints large gaps pipe work and vents. Apply a second coat. Use a heavy duty felt for long term weatherproofing.

Felt comes in either 15 pound or 30 pound ratings. For a more permanent roof coverage use roll roofing. Don t step on your coat. Traditional roofing felt also called tar paper or underlayment is felt saturated with bitumen also called asphalt.

Allow the finished coat to dry for 24 hours. Start from a corner and work your way around the roof walking backwards. Using a flood coat can help the liquid rubber stick to trickier surfaces such as built up felt fibre cement sheets and semi porous surfaces such as masonry. Bitumen or asphalt is distilled from petroleum and is what makes roofing felt waterproof.

Roofing felt is made of compressed polyester or fiberglass fibers. Felt is compressed fibers of wool.