What is asphalt saturated organic felt?
Asphalt Saturated Organic Felts are designed as an underlayment product to be applied over the roof deck prior to the installation of asphalt shingles. Install Asphalt Saturated Organic Felts as a secondary barrier to moisture caused by wind-driven rain and ice damming.
What is asphalt felt paper used for?
Roofing felt or felt paper, also called underlayment or roofing tar paper, goes between the roof deck and the shingles, which adds another layer of protection to your roof.
What is saturated felt underlayment?
Asphalt-Saturated Felt Underlayment A blend of cellulose, polyester, bitumen, and asphalt is used to make felt underlayment. Felt is available in two thicknesses: fifteen-pound and thirty-pound. Fifteen-pound felt underlayment has a perm rating of about five, although this number can rise in high-humidity conditions.
What is felt asphalt?
Asphalt felt and synthetic underlayments are products installed under all the roofing materials and directly on a roof deck. The underlayment provides a secondary weather barrier against wind-driven rain and snow.
What is No 15 asphalt felt?
Felt roofing underlayment is asphalt saturated and are manufactured with a high-grade organic mat. #15 Specification Felt is a specification grade felt roofing underlayment used between the roof deck and the shingles.
What is organic roofing felt?
A roofing felt used as an underlayment beneath fiberglass and asphalt shingles, wood shakes, tiles, and other sloped roof coverings. It helps to stop leaks caused by wind-driven rain. Always store rolls upright on pallets and in a dry protected area.
Is asphalt paper toxic?
Concerns about roofing felt stem from the bituminous impregnating agents (tar and asphaltic bitumen) and whether fumes from the felt may rise into rooms. Roofing felt is not considered toxic and is not listed as a carcinogen. Under normal use, the product is considered stable and nonreactive.
What is the difference between tar paper and felt paper?
Tar paper is a heavy-duty paper used in construction. Tar paper is distinguished from roofing felt, which is impregnated with asphalt instead of tar, but these two products are used the same way, and their names are sometimes used informally as synonyms. Tar paper has been in use for centuries.
How Much Should felt paper overlap?
Roofing Requirements Roofing felt is required to overlap 2 inches over the lower felt course. The overlapping felt creates a secondary barrier for moisture and wicks water away from the shingles above and the sheathing below. Therefore, a 2-inch overlap provides redundancy at the edges where the barrier is weakest.
Is asphalt the same as felt?
Bitumen felt is the most common covering type in use for domestic buildings. The types are: Mastic asphalt is waterproof and is made from bitumen and withstands the weather extremely well. Flat roof felts are bitumen impregnated sheets, which are applied in layers.
Is tar paper toxic?
What is asphalt felt?
Generally speaking, roofing felt is a felt paper that is soaked in asphalt and other water resistant compounds to produce a membrane. Of course, it is a bit more technical than that, but this is the basic idea behind how felt works. Felt is commonly sold in either 15# or 30# rolls measuring 36 inches wide.
What is saturated felt?
Saturated felt is a type of felt with a paper like consistency manufactured by saturating felt with asphalt to add water resistant qualities. What Saturated Felt is Used for? Through the process of saturating the felt paper with asphalt, saturated felt becomes extremely resistant to moisture.
What is organic felt?
“Organic felt” roof shingles refers to using cellulose (paper) as the substrate on which the shingle is constructed. The cardboard or cellulose shingle mat is impregnated with hot asphalt and coated with mineral granules to form a sunlight and weather resistant upper surface.