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.
How long should my roofing nails be.
We have to use 30 mm long nails if we are installing thicker shingles like the laminated shingles cambridge xpress or cambridge xtreme 9 5.
When installing asphalt shingles on felt only to any grade decking you should use 1 inch long roofing nails.
The more common roof thickness is 3 4 inch decking.
Use 1 nails in re roof applications when the old roof has been removed and to use 1 nails when overlaying the old roof.
For reroofing shingle over shingle or hip and ridge application it is necessary to use minimum 35 mm long roofing nails.
If you want to hold 1 2 drywall to a stud wall the length of the nails should be at least 1 1 2.
In general roofing nails should be long enough to penetrate the wood decking a minimum of 3 4.
The one to two inch roofing nails are suitable for most types of roof shingles.
More than 1 layer of roofing not recommended over 3 8 sheathing.
The rule of thumb with nails.
The screw shank nails.
The most commonly used roofing nails range from one to two inches in length.
Is that you should choose a nail that is three times as long as the thickness of the material you are fastening.
This is a reasonable guide most of the time.
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.