Of course it is a bit more technical than that but this is the basic idea behind how felt works.
Substitute for roofing paper.
Asphalt felt tar paper was the the traditional choice of builders for many years and still has some advantages over newer alternatives.
I have some minor roof repair to do and i do not want to buy and entire roll of tar paper felt for under the shingles.
It s not that it s all that expensive but i would only be using about 2 linear feet at the most and i d hate to waste the rest.
For the past few decades the number one choice when selecting a roof underlayment was felt paper or asphalt paper.
See synthetic roofing underlayments 5 06 if the existing wall already has an interior poly or kraft paper vapor retarder beneath the drywall any moisture trapped inside would be unable to diffuse out in either direction resulting in a wall cavity that would be very slow to dry.
Pramote polyamate getty images.
Item 169827 model 5003002.
Is there a substitute.
Alternatives to felt roof underlayment.
But this type of roofing paper is much more costly than roofing felt.
Grace ice water shield 36 in x 75 ft 200 sq ft rubber roof underlayment.
These products worked very well but they would tear easily and were difficult to walk on.
Works well and not to expensive find at most lumber yards the tar paper is mainly a vapor barrier as far as a small repair as yours i see no reason that a small plastic tarp wouldnt work as long as it is seal to the existing tarp using calking or liquid nails.
Can i just spread plastic or rubberized roof sealant on the wood or use a plastic sheet etc.
Grade d building paper is used primarily under stucco in the western united states and is essentially a lighter weight version of asphalt felt.
Synthetic paper is also made in larger sheets which saves roofing contractors a lot of time on installation.
Generally speaking roofing felt is a felt paper that is soaked in asphalt and other water resistant compounds to produce a membrane.
Stone coated metal roofing or stone coated steel roofing has a deep architectural profile and can mimic the look of asphalt shingles wood shakes or clay tiles this premium roofing material comes with warranties up to 50 years and is rated highly for resistance to winds hail and fire.