How Thick Is Roofing Felt

Residential and commercial roofing shingles slate roof ventilation roof underlayments asphaltic and tpo roof membranes.

How thick is roofing felt.

Roofing felt s thickness is actually measured in pounds per square with one square equaling 100 feet of roofing material. Felt roofing always offers a great return on investment. One square as referred to in roofing is equal to 100 sq ft. Roofing shingles and materials plus factory certified roofers including ratings from real homeowners from north america s largest roofing manufacturer.

Roofing felt s thickness is not a measurement of its depth because it is thin similar to heavy paper. Roofing felt also known as tar paper is a roll of felt coverage is often used when constructing a roof. Organic dry felt is made from 100 post consumer recycled material. The most commonly used felts are 15 and 30 with weights of 8 and 20 pounds per 100 square feet respectively.

15 felt is about 030 and 30 felt is about 062. It provides extra waterproofing to protect the wood until shingles are installed. 15 felt type construction helps provide an extra layer of protection between your shingles and your roof deck not included heavy duty design lays flat to help minimize wrinkling asphalt saturation to help improve waterproofing ability to help prevent wind driven rain and water from other sources from infiltrating under your shingles and. The best weight for roofing felt is the 30 pound product because it provides thicker and.

Felt roofing is also not the most expensive option so as a mid tier solution it offers an affordable and cost effective alternative. Roofing felt is comprised of a base made from natural materials such as wood cellulose or synthetic ones such as fiberglass or polyester and then coated or saturated with a protective coating such as bitumen asphalt which repels water but still allows the product to breathe. While not the cheapest option on the market the quality of its material allows it to provide real long term value. In order to know the appropriate amount of roofing felt to use the roof pitch will need to be calculated first.

Asphalt saturated heavy duty roofing felt is available in 15 and 30 pound weights. If you have 30 square than you multiply it by 100. The most commonly used felts are 15 and 30 with weights of 8 and 20 pounds per 100 square feet.