Don t waste time and money by using the wrong type of roll material.
Roofing felt types.
Types of roof underlayment.
Felt underlayment may be made from either organic or fiberglass substrate although the organic is much more common.
It s called organic underlayment because it has a cellulose base.
It is mainly a roll of paper or fiberglass saturated with asphalt and other waterproofing materials.
Sizes of roofing felt.
Roofing felt comes in a handful of types including mineral surfaced asphalt smooth surface and saturated.
Different types of roofing underlayment the roof underlayment or most commonly known as felt paper is the first layer of waterproofing materials that goes before the shingles or roofing materials.
One of the most common types of underlayment used in residential steep slope applications is black ashphalt saturated felt paper.
More than 15 years ago asphalt saturated felt used to the go to roof underlayment material for most residential steep.
Item 656632 model 0903000.
Gaf shingle mate 36 in x 144 ft 400 sq ft felt roof underlayment.