15 Or 30 Pound Felt On Roof

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 felt on roof.

15 lb felt paper weighed 15 pounds per 100 sq. 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 main advantage of using felt roofing underlayment is cost.

15 asphalt felt roofing underlayment provides an extra layer of protection between your shingles and your roof deck. 30 felt is typically thicker stronger and may be less prone to tearing or ripping off during installation or weather events. Organic dry felt is made from 100 post consumer recycled material. Plywood or osb roof deck so 15 20 or 30 will work for any shingle roof the type i recommend depends on roof slope.

This underlayment features excellent asphalt saturation for effective waterproofing. 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. Historically roofing felt paper was named for weight. The difference between 15 lb and 30 lb roofing felt paper.

For many years roofers used asphalt saturated felt under roofing shingles and it was historically available in two standard weights. Roofing underlayment 15 lb felt. 15 came perforated for use as a ply sheet for built up roofing. No 15 felt and no.

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. Item 656632 model 0903000. Gaf shingle mate 36 in x 144 ft 400 sq ft felt roof underlayment. One roofing square and 30 lb felt paper weighed 30 pounds per square.

Felt roofing underlayment is typically available in two types. Felt paper is commonly produced with a certain number of recycled products and coated with asphalt.