General

What is the difference between 15 lb and 30 lb felt paper?

Standard

What is the difference between 15 lb and 30 lb felt paper?

There are two different types of underlayment, felt and synthetic. Felt underlayment is the older of the two and comes in 15 lb and 30 lb rolls. The big difference between the two types of felt underlayment is that 30 lb is thicker, stronger, and less likely to tear than 15 lb.

When should I use 30lb felt?

Roof Slope In the case of roofs with a steeper slope, you should always opt for 30-pound felt instead of 15-pound. This is essential due to its increased slip protection and resistance to tearing. If you opt for thinner felt on a steep roof, it is more likely to rip.

What weight of roofing felt should I use?

Most residential rooftops use 15 or 30 pound roof felt. In drier areas, lighter roofing felts may be used.

Is 30lb felt paper waterproof?

Is Roofing Felt Waterproof? Roofing Felt is the support material that is required to develop roll roofing and roof shingles. Being used as the waterproof coverings in commercial as well as residential roofs for decades, these membranes comprise two layers, signifying it is waterproof.

Why is it called 30 pound felt paper?

Historically, roofing felt paper was named for weight. 15-lb felt paper weighed 15 pounds per 100 sq. ft. (one roofing square) and 30-lb felt paper weighed 30 pounds per square.

Is 30 felt better than 15?

While #15 is a good option for most roofing jobs, #30 provides more protection and performance for steep roofs and flat roofs. If your roof does not have a steep pitch, you can use #15. This weight of felt is a good economic choice if you have a standard roof.

What is #30 felt paper?

#30 Saturated Roof Felt The roof felts are asphalt saturated and are manufactured with a high-grade organic mat. #30 Saturated Felt underlayment is specified for use as an underlayment between the roof deck and the shingles.

Do roofers use felt anymore?

As you may have heard, the choice of synthetic over traditional felt underlayment is a growing trend when it comes to roofs. These days, most roofers are using synthetic over traditional felt. This could be a revolutionary positive change in the roofing industry or, the beginning to a costly end.