How Long Should Roofing Nails Be

Use 1 nails in re roof applications when the old roof has been removed and to use 1 nails when overlaying the old roof.

How long should roofing nails be.

When nailing very thin materials into wood a minimum of 1 2 of penetration is necessary. In general roofing nails should be long enough to penetrate the wood decking a minimum of 3 4. Roofing nails range from one to six inches in length. Browse other blogs by keywords.

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. Continue reading below our video of the day nails that are longer than six inches are called pikes and they are seldom used on roofs. The length of each nail must be a minimum of 1 inches long and for roof overs atlas recommends a nail length of at least 2 inches. If you want to hold 1 2 drywall to a stud wall the length of the nails should be at least 1 1 2.

Nails of the proper length should penetrate three fourths of an inch into the roof deck. The thickness of the nail is directly proportional to its length thus the longer the nail the bigger its size. 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.