How To Apply Roofing Felt Paper

Use a 4 inch 10 cm paintbrush or a roller to apply the paint or primer.

How to apply roofing felt paper.

Also called roof felt or builder s felt overlapped tar paper creates a water barrier that is your home s last line of defense against the elements if your shingles are damaged by wind hail or. Begin at the bottom working in horizontal lines and gradually moving upward. Felt labeled astm 15 meets specific standards and is the norm in many areas. Start the roof felt at one bottom corner of the roof.

Felt or building paper must be applied to walls properly to be effective. Start at the bottom of the roofline and work up so any water that gets through the roofing material will shed down the tar paper and will not go under it. All drip edges along roof eaves valley liners and flashing need to be installed before the roof paper layer is laid down. Install pieces in the correct order and make cuts carefully so any moisture can travel downward at all points without slipping under the wrap.

Drag it gently from one end of the roof to the other east to west or west to east. It is commonly called 15lb paper. The most common size width for rolls of roofing paper is 36 inches. 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.

Tack it in place at the corner with the end flush with the end of the roof and the bottom edge of the roll right along the bottom of the roof. Laying the felt the roofing felt should be applied in layers that overlap. Apply waterproof paint or primer to promote felt attachment. Many builders use standard 15 pound roofing felt.

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.