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.
How long should roofing nails be.
This is a reasonable guide most of the time.
The thickness of the nail is directly proportional to its length thus the longer the nail the bigger its size.
Nails of the proper length should penetrate three fourths of an inch into the roof deck.
Use 1 nails in re roof applications when the old roof has been removed and to use 1 nails when overlaying the old roof.
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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.
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.
Roofing nails range from one to six inches in length.
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.