How Far To Nail Roofing Felt

If you so happen to have thicker underlayment 3 4 inch or more then use 4d ring shank nails.

How far to nail roofing felt.

Space each nail apart by about 30 to 36 inches 76 to 91 cm along the side of the felt closest to the roof s peak and 12 inch 30 5 cm along the side closest to the ground. Fasten drip edge on eaves with galvanized nails and a hammer about 12 inches apart before laying roof felt. You will need 1 10 gallon of lap not mastic cement for every roll and 2 pounds of roofing nails for every square. Defer putting drip edge on angled gable ends until after the felt is laid so the metal.

The nails should not go to the very outer edge of the roll. 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 age. Small sheds usually require about 100 to 150 clout nails. The nails themselves should be in uniform rolls spaced six to eight inches apart from each other on either side and top to bottom.

Where a roll ends and a new one is begun the two rolls should be overlapped by four inches. These are 1 25 inches long and can be used for underlayment that ranges up to 1 2 thick. Keep nails at least 12 inches from the center of the valley. They are long enough to penetrate the sheathing.

If the circular nail heads penetrate the felt they can cause leakage. For the lower portion of the roof especially the part that overhangs the eaves and is susceptible to ice dams it is a good idea to apply self stick waterproof shingle underlayment wsu also called ice guard. Use a 4 inch wide bed of roofing cement to attach everything that is closer than 12 inches. The overhang to the next strip should be 3 8 inch.

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. Pick up packs of 3d ring shank nails. These are 1 5 inches long plenty long to drive through that over sized over thick underlayment. All nails and staples should be placed on the lower half of the paper.

The paper should then be nailed in or stapled every three to four inches across. Make sure there is a two inch space between the edge of the roll and the first nail. Be careful to drive nails flush. Is felt really that important and what is roofing felt anyway.

Roofing felt is a layer of tar paper installed beneath the shingles to provide a backup waterproof membrane in case of leakage.