How To Waterproof Roofing Felt

Apply a second coat.

How to waterproof roofing felt.

Use a heavy duty felt for long term weatherproofing. Felt comes in either 15 pound or 30 pound ratings. 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. Bitumen or asphalt is distilled from petroleum and is what makes roofing felt waterproof.

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. Allow the finished coat to dry for 24 hours. 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. Repeat this process until you have covered the entire roof.

Don t step on your coat. Start from a corner and work your way around the roof walking backwards. Traditional roofing felt also called tar paper or underlayment is felt saturated with bitumen also called asphalt. Felt is compressed fibers of wool.

For a more permanent roof coverage use roll roofing. Start the roof felt at one bottom corner of the roof. Pour about a gallon of elastomeric coating from your bucket onto the roof and begin spreading with your paint roller. 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.

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. 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.