How Roofing Felt Works

As you work the paper can be tacked down in the center so it won t blow away.

How roofing felt works.

Asphalt saturated heavy duty roofing felt is available in 15 and 30 pound weights. Today glass fiber or polyester fabric may be used instead of paper. See more home construction pictures. Laying the felt the roofing felt should be applied in layers that overlap.

Afterward roll the felt away from you lengthwise along the lower edge about 10 feet 120 in. Residential and commercial roofing shingles slate roof ventilation roof underlayments asphaltic and tpo roof membranes. Roofing felt also known as tar paper serves as both an extra layer of protection between the shingles and the plywood and as a temporary moisture barrier until all the shingles are in place. How roofing materials work.

Also known as tar paper roofing felt originated in finland in the 1870 s as a waterproofing underlayment for roofs. Why use roofing felt paper. The felt keeps the roof deck dry before shingles go on protects against wind driven rain as shingles fail and increases fire resistance. As you roll it out make sure that it remains flat.

Roofing shingles and materials plus factory certified roofers including ratings from real homeowners from north america s largest roofing manufacturer. First paper was impregnated with coal tar. Today s metal roofs however are a far cry from that image. Roofing felt commonly called tar paper is an important component of any roofing system.

Later asphalt was used in the manufacture of roofing felt. The best weight for roofing felt is the 30 pound product because it provides thicker and. Istockphoto jfc215 when you think of a metal roof you might have an image of a dilapidated old lean to with a corrugated tin roof. 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.

Start rolling the first layer of felt out from the bottom of one side of the roof. Next find the center of the roof at the top and the eave then snap a vertical chalk line. Using a roll of felt coverage or several rolls provides the roof with additional waterproofing and protects the wood sheathing of a roof until the installation of shingles is finished. Begin at the bottom right or bottom left of the roof.