Minimum Roofing Nail Length

0 113 inch nominal shank diameter.

Minimum roofing nail length. A minimum 0 280 inch full round head diameter. Ring shank to extend a minimum of 1 1 2 inches from the tip of the nail. 16 to 20 rings per inch. Minimum 2 3 8 inch nail length.

A roofing nail should have a minimum nominal shank diameter of 12 gauge 2 67 mm and a minimum head diameter of 9 5 mm. Roofing nail should have a barbed shank until the head which eliminates nail pops blow offs and roof leaks. A large nail head and heavier shank gauge provide greater holding power. The international building code requires that roofing nails have a minimum 12 gauge shank and a 3 8 inch diameter head.

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. More than 1 layer of roofing not recommended over 3 8 sheathing. All nails must be corrosion resistant. When nailing shingles proper penetration into the roof deck is essential to ensure the nail and shingle remain secure.

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. 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. 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. The more common roof thickness is 3 4 inch decking.

Ring diameter a minimum of 0 010 inch over shank diameter. Nails of the proper length should penetrate three fourths of an inch into the roof deck. 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. For example galvanized by various processes aluminium copper or stainless steel.

When installing asphalt shingles on felt only to any grade decking you should use 1 inch long roofing nails.