Of course it is a bit more technical than that but this is the basic idea behind how felt works.
15 lb or 30 lb felt for roof.
15 astm 4869 type i is an authentic 15 astm 4869 type i is an authentic asphalt saturated organic felt underlayment is used as a breathable secondary weather resistant barrier when applied over the roof deck prior to the installation of the primary roofing product.
In my opinion felt paper is a vapor barrier plus keeps the oils in the shingles from leaching out and into the wood substrate i e.
What is roofing felt.
Organic dry felt is made from 100 post consumer recycled material.
15 astm 4869 type i is an authentic 15 astm 4869 type i is an authentic asphalt saturated organic felt underlayment is used as a breathable secondary weather resistant barrier when applied over the roof deck prior to the installation of the primary roofing product.
As of publication you can purchase a 72 foot roll of 30 pound roofing felt for around 15.
Felt paper is commonly produced with a certain number of recycled products and coated with asphalt.
15 came perforated for use as a ply sheet for built up roofing.
Generally speaking roofing felt is a felt paper that is soaked in asphalt and other water resistant compounds to produce a membrane.
Ft at menards send cancel mail in rebate is in the form of merchandise credit check valid in store only.
15 asphalt felt 3 x 144 roofing underlayment 432 sq.
Asphalt saturated heavy duty roofing felt is available in 15 and 30 pound weights.
Felt is commonly sold in either 15 or 30 rolls measuring 36 inches wide.
Historically roofing felt paper was named for weight.
The best weight for roofing felt is the 30 pound product because it provides thicker and.
15 lb felt paper weighed 15 pounds per 100 sq.
Plywood or osb roof deck so 15 20 or 30 will work for any shingle roof the type i recommend depends on roof slope.
The difference between 15 lb and 30 lb roofing felt paper.
Organic dry felt is made from 100 post consumer recycled material.
Labor is higher for peel and stick.
30 pound roofing felt it is not paper it s made from either fiberglass or polyester that s been bound together with asphalt costs the same per roll as 15 pound felt but there are 216 square.