How Long Should Roofing Nails Be

Roofing nails should be long enough to penetrate the roofing material and go 19 mm into osb solid wood plywood or non veneer wood decking or through thickness of decking whichever is less.

How long should roofing nails be.

When installing asphalt shingles on felt only to any grade decking you should use 1 inch long roofing nails. Nails of the proper length should penetrate three fourths of an inch into the roof deck. This is a reasonable guide most of the time. In general roofing nails should be long enough to penetrate the wood decking a minimum of 3 4.

More than 1 layer of roofing not recommended over 3 8 sheathing. If you want to hold 1 2 drywall to a stud wall the length of the nails should be at least 1 1 2. Browse other blogs by keywords. Roofing nails range from one to six inches in length.

The thickness of the nail is directly proportional to its length thus the longer the nail the bigger its size. When nailing very thin materials into wood a minimum of 1 2 of penetration is necessary. 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.