Minimum Roofing Nail Length

Nails with round heads and the following minimum dimensions.

Minimum roofing nail length.

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. 0 113 inch nominal shank diameter. When nailing shingles proper penetration into the roof deck is essential to ensure the nail and shingle remain secure. If the hardiplank is being installed on a building in a humid climate or near the ocean or any large body of water the stainless steel nails are the first choice.

A large nail head and heavier shank gauge provide greater holding power. When installing asphalt shingles on felt only to any grade decking you should use 1 inch long roofing nails. The international building code requires that roofing nails have a minimum 12 gauge shank and a 3 8 inch diameter head. Minimum 2 3 8 inch nail length.

Galvanized steel aluminum or copper roofing nails minimum 12 gage 0 105 in 3 mm shank with minimum 3 8 in 10 mm diameter head astm f 1667 of a length to penetrate through the roofing materials and a minimum of in 19 mm into the roof sheathing. 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. For example galvanized by various processes aluminium copper or stainless steel. Nails of the proper length should penetrate three fourths of an inch into the roof deck.

Pick out stainless steel or hot dipped galvanized nails size 6d 1 1 2 inch long siding nails and 2 inch long siding nails in the quantity you need for your project. The more common roof thickness is 3 4 inch decking. 16 to 20 rings per inch. Ring diameter a minimum of 0 010 inch over shank diameter.

More than 1 layer of roofing not recommended over 3 8 sheathing. Ring shank to extend a minimum of 1 1 2 inches from the tip of the nail. For all owens corning shingles roofing nails should penetrate into the wood deck by a minimum of inch or completely through the roof deck by a minimum of 1 8 inch. However where the roof deck is less than three fourths of an inch thick the nail should be long enough to penetrate fully and extend at least one eighth of an inch through the roof deck.

All nails must be corrosion resistant.