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How long should roofing nails be.
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.
Roofing nails range from one to six inches in length.
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.
In general roofing nails should be long enough to penetrate the wood decking a minimum of 3 4.
Nails of the proper length should penetrate three fourths of an inch into the roof deck.
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.
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.
If you want to hold 1 2 drywall to a stud wall the length of the nails should be at least 1 1 2.
Use 1 nails in re roof applications when the old roof has been removed and to use 1 nails when overlaying the old roof.
The thickness of the nail is directly proportional to its length thus the longer the nail the bigger its size.