15 Vs 30 Lb Roofing Felt

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.

15 vs 30 lb roofing felt.

Gaf shingle mate 36 in x 144 ft 400 sq ft felt roof underlayment. The best weight for roofing felt is the 30 pound product because it provides thicker and. One roofing square and 30 lb felt paper weighed 30 pounds per square. No doubt about it.

On steep roofs the 15 rips easily under foot. 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. 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. A 66 foot roll of synthetic underlayment will set you back about 86.

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. 15 lb felt paper weighed 15 pounds per 100 sq. Asphalt saturated heavy duty roofing felt is available in 15 and 30 pound weights. Plywood or osb roof deck so 15 20 or 30 will work for any shingle roof the type i recommend depends on roof slope.

Organic dry felt is made from 100 post consumer recycled material. 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. As of publication you can purchase a 72 foot roll of 30 pound roofing felt for around 15. On lower slopes i feel more comfortable with the thicker felt.

The difference between 15 lb and 30 lb roofing felt paper. Item 656632 model 0903000. Organic dry felt is made from 100 post consumer recycled material. 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.

Historically roofing felt paper was named for weight.