15 Or 30 Lb Roofing Felt

Felt roofing underlayment is typically available in two types.

15 or 30 lb roofing felt.

Historically roofing felt paper was named for weight. Gaf shingle mate 36 in x 144 ft 400 sq ft felt roof underlayment. This gardner asphalt 15 432 sq. On steep roofs the 15 rips easily under foot.

Asphalt saturated heavy duty roofing felt is available in 15 and 30 pound weights. 15 pounds per hundred square feet and 30 pounds per hundred square feet. No 15 felt and no. 15 lb felt paper weighed 15 pounds per 100 sq.

Item 656632 model 0903000. Felt paper is commonly produced with a certain number of recycled products and coated with asphalt. 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. 30 felt is typically thicker stronger and may be less prone to tearing or ripping off during installation or weather events.

Plywood or osb roof deck so 15 20 or 30 will work for any shingle roof the type i recommend depends on roof slope. Felt this gardner asphalt 15 432 sq. Unrolled length that combine to provide over 430 sq. One roofing square and 30 lb felt paper weighed 30 pounds per square.

The main advantage of using felt roofing underlayment is cost. If 100 the typical upgrade cost to go from 15 to 30 is going to blow a sale for you you are doing something wrong. 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. The 15 pound was for lighter weight projects while the 30 offered more heavy duty protection.

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 best weight for roofing felt is the 30 pound product because it provides thicker and. Of coverage for residential and commercial roofing projects. No doubt about it.

The choice of 15 or 30 pound felt paper is up to you. For many years roofers used asphalt saturated felt under roofing shingles and it was historically available in two standard weights. The difference between 15 lb and 30 lb roofing felt paper. On lower slopes i feel more comfortable with the thicker felt.