15 Lb Roofing Felt Vs 30 Lb

Felt roofing underlayment is typically available in two types.

15 lb roofing felt vs 30 lb.

As of publication you can purchase a 72 foot roll of 30 pound roofing felt for around 15. What is roofing felt. The best weight for roofing felt is the 30 pound product because it provides thicker and. Organic dry felt is made from 100 post consumer recycled material.

Of course it is a bit more technical than that but this is the basic idea behind how felt works. Generally speaking roofing felt is a felt paper that is soaked in asphalt and other water resistant compounds to produce a membrane. One roofing square and 30 lb felt paper weighed 30 pounds per square. 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. The difference between 15 lb and 30 lb roofing felt paper. 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.

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 lb felt paper weighed 15 pounds per 100 sq. The main advantage of using felt roofing underlayment is cost. Roofing felt also called roofing felt paper is underlayed on roofs before shingles are added.

No 15 felt and no. The numbers ihad a correlation to the weight not the thickness. 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. Felt is commonly sold in either 15 or 30 rolls measuring 36 inches wide.

Organic dry felt is made from 100 post consumer recycled material. The standard types of felt are 15 and the more waterproof 30. Asphalt saturated heavy duty roofing felt is available in 15 and 30 pound weights. 30 felt is typically thicker stronger and may be less prone to tearing or ripping off during installation or weather events.