Bitumen Felt Roofing Thickness

Felt roofing underlayment is one of the oldest types of roofing underlayment.

Bitumen felt roofing thickness.

Roofing felt s thickness is actually measured in pounds per square with one square equaling 100 feet of roofing material. It s created by saturating paper or fiberglass mat with asphalt. 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. 30 felt is typically thicker stronger and may be less prone to tearing or.

The 1 ply material is not durable and if used can pose certain problems such as breaking down prematurely while the 2 and 3 ply material roofs cost significantly more to install which can make this one of the most costly types of flat roofing products around. 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. Asphalt saturated heavy duty roofing felt is available in 15 and 30 pound weights. The most commonly used felts are 15 and 30 with weights of 8 and 20 pounds per 100 square feet.

Roofing felt s thickness is not a measurement of its depth because it is thin similar to heavy paper. Thickness roofing felt s thickness is not a measurement of its depth because it is thin similar to heavy paper. The substance itself is made from bitumen which comes from the distillation of crude oil that has been either mixed with sand or crushed limestone. Bitumen roofing is also available in 1 2 or 3 ply.

Roofing asphalt saturated felt is a blend of cellulose polyester bitumen and asphalt soaked in a waterproofing agent. The best weight for roofing felt is the 30 pound product because it provides thicker and stronger footing for. The most commonly used felts are 15 and 30 with weights of 8 and 20 pounds per 100 square feet respectively. Thirty pound felt is more thick and stiff than fifteen pound so thirty pound is more resistant to damage during installation and can protect the roof longer if.

No 15 felt and no. Bituminous felt is a form of waterproof sheeting that is used to cover flat roofs or as an underlay beneath slate or tile roofing.