15 Lb Roofing Felt Vs 30 Lb

No 15 felt and no.

15 lb roofing felt vs 30 lb.

The difference between 15 lb and 30 lb roofing felt paper. Roofing felt also called roofing felt paper is underlayed on roofs before shingles are added. 15 tarah astm 4869 type i is an 15 tarah 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. 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.

What is roofing felt. Organic dry felt is made from 100 post consumer recycled material. Felt roofing underlayment is typically available in two types. As of publication you can purchase a 72 foot roll of 30 pound roofing felt for around 15.

Felt is commonly sold in either 15 or 30 rolls measuring 36 inches wide. The numbers ihad a correlation to the weight not the thickness. One roofing square and 30 lb felt paper weighed 30 pounds per square. Generally speaking roofing felt is a felt paper that is soaked in asphalt and other water resistant compounds to produce a membrane.

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 standard types of felt are 15 and the more waterproof 30. 15 lb felt paper weighed 15 pounds per 100 sq. The main advantage of using felt roofing underlayment is cost.

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. Its main purpose is to prevent moisture from leaking into a roof. Felt paper is commonly produced with a certain number of recycled products and coated with asphalt. 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.

Organic dry felt is made from 100 post consumer recycled material. The biggest drawback to synthetic underlayment is the cost. The best weight for roofing felt is the 30 pound product because it provides thicker and. Of course it is a bit more technical than that but this is the basic idea behind how felt works.