15 Or 30 Pound Roof Felt

In the old days common felt was 15 lb felt and 30 lb felt and a roll of the first held 4 squares and weighed 60 lbs while a roll of the second held 2 squares and weighed 60 lbs.

15 or 30 pound roof felt.

The main advantage of using felt roofing underlayment is cost. For many years roofers used asphalt saturated felt under roofing shingles and it was historically available in two standard weights. Felt roofing underlayment is typically available in two types. One roofing square and 30 lb felt paper weighed 30 pounds per square.

The 15 pound was for lighter weight projects while the 30 offered more heavy duty protection. 30 felt is typically thicker stronger and may be less prone to tearing or ripping off during installation or weather events. Felt paper is commonly produced with a certain number of recycled products and coated with asphalt. Organic dry felt is made from 100 post consumer recycled material.

Item 656632 model 0903000. Plywood or osb roof deck so 15 20 or 30 will work for any shingle roof the type i recommend depends on roof slope. Asphalt saturated heavy duty roofing felt is available in 15 and 30 pound weights. Historically roofing felt paper was named for weight.

The choice of 15 or 30 pound felt paper is up to you. The best weight for roofing felt is the 30 pound product because it provides thicker and. Gaf shingle mate 36 in x 144 ft 400 sq ft felt roof underlayment. 15 lb felt paper weighed 15 pounds per 100 sq.

15 came perforated for use as a ply sheet for built up roofing. 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. Since 30 pound paper is quite a bit thicker you might want to use underneath upstairs flooring applications where the sounds of footsteps can be heard more frequently throughout the house. 15 pounds per hundred square feet and 30 pounds per hundred square feet.

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. This 15 felt roof deck protection features quality asphalt saturation for great waterproofing to add an extra layer of protection between your shingles and your roof deck.