For many years roofers used asphalt saturated felt under roofing shingles and it was historically available in two standard weights.
15 roofing felt thickness.
Asphalt saturated heavy duty roofing felt is available in 15 and 30 pound weights.
15 specification felt general information 15 specification felt astm d4869 type ii d226 type i atlas provides a complete selection of roofing felts or roofing paper.
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.
Gaf shingle mate 36 in x 144 ft 400 sq ft felt roof underlayment.
This gardner asphalt 15 432 sq.
Felt has a 36 in.
Its main purpose is to prevent moisture from leaking into a roof.
Organic dry felt is made from 100 post consumer recycled material.
The best weight for roofing felt is the 30 pound product because it provides thicker and.
The numbers ihad a correlation to the weight not the thickness.
Unrolled length that combine to provide over 430 sq.
Of coverage for residential and commercial roofing projects.
No 15 felt and no.
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.
The main advantage of using felt roofing underlayment is cost.
Felt roofing underlayment is typically available in two types.
Roofing felt also called roofing felt paper is underlayed on roofs before shingles are added.
Width and a 144 ft.
Roofing paper is an essential layer in the roofing process as it acts as extra protection from the elements.
Item 656632 model 0903000.
15 pounds per hundred square feet and 30 pounds per hundred square feet.