Roofing Felt Vs Tar Paper

Felt is commonly sold in either 15 or 30 rolls measuring 36 inches wide.

Roofing felt vs tar paper.

Felt underlayment is an all over roofing accessory made of a natural wood cellulose natural fibers etc or synthetic. Per square 100 sq. Synthetic or felt roofing underlayment which is better. If you are looking for a suitable roofing felt for your home and want to get the best available then you may be torn between peel and stick roofing underlayment and felt roofing paper the former is a modern invention which is designed to be more easy to place on a roof and need less professional assistance.

Sometimes called roofing felt underlayment roofing tar paper or roll roofing this is a layer of protection installed between the roof deck and the roofing shingles. Felt paper also referred to as tar paper was the standard underlayment material in roofing for decades. Felt paper and synthetic. Ft or unrated 30 lb.

Roofing felt also known as tar paper provides a protective underlayment over the roof deck and beneath the shingles. Fast forward 170 years and roofing felt is still the most popular roofing material now used as an underlayment being installed today. It also offers fire resistance required for home construction. Although tar paper has traditionally been the standard undercoating for shingles as of 2010 synthetics are becoming more popular as an underlayment.

For this article we will just call it felt underlayment or felt paper. Long ago a 15 role actually weighed. Most of the felt paper stocked by lumberyards today is either unrated 15 felt which typically weight around 7 or 8 lbs. Of course it is a bit more technical than that but this is the basic idea behind how felt works.

It was easy to use durable and even had alignment lines to help with the shingle installation. Generally speaking roofing felt is a felt paper that is soaked in asphalt and other water resistant compounds to produce a membrane. Roofing felt offers an additional layer. The sheathing paper specified by code irc is astm rated type 1 paper astm d226 an asphalt saturated felt tar paper which weighs a minimum of 11 5 pounds per square.

In our industry there are two main varieties of underlayment. Roofing felt or tar paper is infused with a petroleum based solution to provide an additional layer of roof protection under shingles. For decades roofers have fitted a layer of felt over a roof s sheathing or roof deck before installing shingles. Tar paper also called roofing felt is used under shingles.