How Long Should Roof 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.

How long should roof nails be.

The thickness of the nail is directly proportional to its length thus the longer the nail the bigger its size. You should use 3 inch ring shank nails to allow at least 1 1 2 inches of truss penetration when working with lumber slats. 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. 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 more common roof thickness is 3 4 inch decking. 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. The type of nails you ll need to use during the sheathing process depends on the roof material thickness.

Continue reading below our video of the day. Browse other blogs by keywords. For reroofing shingle over shingle or hip and ridge application it is necessary to use minimum 35 mm long roofing nails.