Roof Nail Size For Underlayment

Nail down squarely 90 degrees into the deck to secure caps flush to the underlayment.

Roof nail size for underlayment.

The more common roof thickness is 3 4 inch decking. Slats of wood used for roof sheathing are lumber boards with face widths ranging from 4 to 12 inches. Fasten drip edge on eaves with galvanized nails and a hammer about 12 inches. For all owens corning shingles roofing nails should penetrate into the wood deck by a minimum of inch or completely through the roof deck by a minimum of 1 8 inch.

Wood shakes minimum 3 4 sheathing wood shakes nail type minimum length 18 straight split 5d box 1 3 4 18 and 24 handsplit and resawn 6d box 2. Smooth galvanized coil roofing nails 7200 pack 26 98 gaf feltbuster 1000 sq. Nail metal drip edge flashing which bends over the roof and down the edge of the facing board on all roof edges. The international building code requires that roofing nails have a minimum 12 gauge shank and a 3 8 inch diameter head.

These are 1 5 inches long plenty long to drive through that over sized over thick underlayment. Generally you ll need to place two nails at each location where it makes contact with a roof truss. In normal wind zones. When nailing shingles proper penetration into the roof deck is essential to ensure the nail and shingle remain secure.

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. On center on both head and end laps. Only use 1 diameter plastic cap roofing nails. When installing asphalt shingles on felt only to any grade decking you should use 1 inch long roofing nails.

More than 1 layer of roofing not recommended over 3 8 sheathing. These are 1 25 inches long and can be used for underlayment that ranges up to 1 2 thick. Fasten the field area in the middle of the roll a minimum of 24 o c. For slats featuring face widths of 12 inches you will space three nails evenly apart about every 3 inches.

12 x 1 in. Synthetic roofing underlayment roll 74 98. If you so happen to have thicker underlayment 3 4 inch or more then use 4d ring shank nails. Plastic round cap roofing nail 3 000 pack 21 97 grip rite grip rite 1 1 4 in.