How To Apply Roofing Felt Paper

Install pieces in the correct order and make cuts carefully so any moisture can travel downward at all points without slipping under the wrap.

How to apply roofing felt paper.

Many builders use standard 15 pound roofing felt. To start each course drive a dozen staples grouped close together. 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. Drag it gently from one end of the roof to the other east to west or west to east.

Some roofers prefer to attach felt underlayment with 1 inch roofing nails or special nails with plastic washers but most codes allow staples which are easier to drive. Felt or building paper must be applied to walls properly to be effective. Then unroll the felt and straighten out the row before you add more staples. Many rolls are pre striped allowing installers to keep a straight line when applying roll strips to the roof side by side.

Felt labeled astm 15 meets specific standards and is the norm in many areas. Once the cement is spread across the roof it s time to place the second layer down. Start the roof felt at one bottom corner of the roof. As you work the paper can be tacked down in the center so it won t blow away.

The most common size width for rolls of roofing paper is 36 inches. 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. As mentioned above place the first 6 inches 15 cm of the second layer on top of the first layer. Apply waterproof paint or primer to promote felt attachment.

Apply roofing cement and secure the second layer to the roof. 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. All drip edges along roof eaves valley liners and flashing need to be installed before the roof paper layer is laid down. It is commonly called 15lb paper.

10 roof problems and what to do about them. Cover the roof above the underlayment with roofing felt paper. 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. Get your trowel and another scoop of cement and apply it on the roof below the second chalk line.

Laying the felt the roofing felt should be applied in layers that overlap.