Roof Felt Paper Overlap

Roofing felt is required to overlap 2 inches over the lower felt course.

Roof felt paper overlap.

Each layer overlaps the lower one by at least 2 in. As you did with the flashing always lap upper pieces over lower pieces. Step 4 continue rolling out the felt until you reach the roof hip on the other end. Roofing felt or tar paper is infused with a petroleum based solution to provide an additional layer of roof protection under shingles.

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. When you arrive at the rake the paper should be cut flush with a knife and then adjusted to line up with the chalk line. Although tar paper has traditionally been the standard undercoating for shingles as of 2010 synthetics are becoming more popular as an underlayment. Insert staples with a hammer stapler 12 inches apart along the top and bottom edges of the felt paper as you roll it out along the roof.

Follow this step by nailing drip edge along rakes sides of roof on top of the underlayment. Adjust the felt as you roll it making sure that it s straight with no bubbling. Drive about five nails in the top right hand corner and roll out the felt about halfway perhaps 25 feet across the roof. Roll out a few feet of felt and align the edge of the felt along the rake and the first course.

Adjacent pieces of drip edge should overlap at least 2 inches 51 mm. How much should i overlap my felt underlayment on my roof. Adjust the bottom of the felt if necessary to keep it flush with the gutter apron. The vertical leg of the drip edge should be at least 1 5 inches wide and extend at least 0 25 inches below the sheathing.

Remember to leave a 2 overlap. Felt underlayment can overlap more than 2 inches to provide an adequate barrier. Overlap the end of a roll about 4 inches with the start of a new roll and fasten both pieces to the. Laying the felt as you work the paper can be tacked down in the center so it won t blow away.

The drip edge should extend at least 2 inches on the roof. Continue along the roof to the other end and trim the felt flush at the end with a utility knife. Never install the felt vertically across your roof. 15 asphalt saturated felt underlayment some codes may require no.

Where a roll ends and a new one is begun the two rolls should be overlapped by. Stand on the first course of felt and work with the second course of felt above you.