15 Vs 30 Lb Roof Felt

Historically roofing felt paper was named for weight.

15 vs 30 lb roof felt.

The difference between 15 lb and 30 lb roofing felt paper. Felt roofing underlayment is typically available in two types. 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. The felt helps prevent wind driven rain from causing damage to your roof structure and home.

As of publication you can purchase a 72 foot roll of 30 pound roofing felt for around 15. This 30 felt roof deck protection provides a layer of protection between your shingles and roof deck. 30 felt is typically thicker stronger and may be less prone to tearing or ripping off during installation or weather events. Labor is higher for peel and stick.

A 66 foot roll of synthetic underlayment will set you back about 86. No 15 felt and no. Gaf shingle mate 36 in x 144 ft 400 sq ft felt roof underlayment. The best weight for roofing felt is the 30 pound product because it provides thicker and.

Plywood or osb roof deck so 15 20 or 30 will work for any shingle roof the type i recommend depends on roof slope. 15 came perforated for use as a ply sheet for built up roofing. Organic dry felt is made from 100 post consumer recycled material. One roofing square and 30 lb felt paper weighed 30 pounds per square.

30 felt type construction helps provide an extra layer of protection between your shingles and your roof deck not included. 15 lb felt paper weighed 15 pounds per 100 sq. The main advantage of using felt roofing underlayment is cost. Felt paper is commonly produced with a certain number of recycled products and coated with asphalt.

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. 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.