Roof Nail Size For Underlayment

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.

Roof nail size for underlayment.

These are 1 5 inches long plenty long to drive through that over sized over thick underlayment. 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. Synthetic roofing underlayment roll 74 98. Smooth galvanized coil roofing nails 7200 pack 26 98 gaf feltbuster 1000 sq.

Slats of wood used for roof sheathing are lumber boards with face widths ranging from 4 to 12 inches. Only use 1 diameter plastic cap roofing nails. For slats featuring face widths of 12 inches you will space three nails evenly apart about every 3 inches. These are 1 25 inches long and can be used for underlayment that ranges up to 1 2 thick.

Plastic round cap roofing nail 3 000 pack 21 97 grip rite grip rite 1 1 4 in. In normal wind zones. 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. 12 x 1 in.

More than 1 layer of roofing not recommended over 3 8 sheathing. In normal wind zones the nails should be driven at 6 0 o c. Fasten the field area in the middle of the roll a minimum of 24 o c. Nail down squarely 90 degrees into the deck to secure caps flush to the underlayment.

Whether you screw nail or staple your 3 8ths underlayment depends completely upon what flooring product you are planning to put over it. When installing asphalt shingles on felt only to any grade decking you should use 1 inch long roofing nails. If you so happen to have thicker underlayment 3 4 inch or more then use 4d ring shank nails. When nailing shingles proper penetration into the roof deck is essential to ensure the nail and shingle remain secure.

Generally you ll need to place two nails at each location where it makes contact with a roof truss. Fasten drip edge on eaves with galvanized nails and a hammer about 12 inches. The more common roof thickness is 3 4 inch decking. The international building code requires that roofing nails have a minimum 12 gauge shank and a 3 8 inch diameter head.