How To Use Roofing Felt

It is necessary to apply the roofing felt tar paper to a clean dry surface immediately after the sheathing is completed to protect it from the weather.

How to use roofing felt.

First paper was impregnated with coal tar. Roofing felt may be necessary for use with your shingles to meet a class a fire rating when shingles are evaluated for their fire ratings it is done on a small test deck with the roofing felt underlayment in place without this underlayment the shingles alone may not meet the class a fire requirements. Taking the time to properly prepare the sheathing will make all the difference in how quickly and easily the felt paper is installed. Roofing felt acts as a waterproof barrier between the sheathing and the roofing material shingles etc.

Before applying roofing you ll need to cover the sheathing with roofing felt also often called tar paper most local codes call for using 30 pound felt. Later asphalt was used in the manufacture of roofing felt. Align this layer with the bottom of the roof. Roof felt also known as tar paper is a waterproof fiberglass product.

Roofing felt that provides the best shielding and allows the roofer to walk on it without ripping it is the option roofers most often choose. Also known as tar paper roofing felt originated in finland in the 1870 s as a waterproofing underlayment for roofs. Snap a chalk line the. Whatever your reason for attaching roof felt you should only do it after cutting your pieces to.

Today glass fiber or polyester fabric may be used instead of paper. Weight matters asphalt saturated heavy duty roofing. Installing the roofing felt does take care but can go very quickly. It is used for temporary roofing for weatherproofing and as an underlayment under shingles or other permanent roofing materials.

These thick layers of roofing felt are installed by heating the back of the felt with a butane torch and then carefully applying it to the roof.