How Long Should Roof Nails Be

For reroofing shingle over shingle or hip and ridge application it is necessary to use minimum 35 mm long roofing nails.

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. 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 that are longer than six inches are called pikes and they are seldom used on roofs.

Browse other blogs by keywords. You should use 3 inch ring shank nails to allow at least 1 1 2 inches of truss penetration when working with lumber slats. 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.

The thickness of the nail is directly proportional to its length thus the longer the nail the bigger its size. Continue reading below our video of the day. Roofing nails range from one to six inches in length.