Roofing Nail Size Requirements

Existing roof is a 3 tab shingle with 1 2 plywood.

Roofing nail size requirements. 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. Nails of the proper length should penetrate three fourths of an inch into the roof deck. If you need bigger nails including pikes you may need to place a special order at the hardware store. Nails are required to be galvanized steel stainless steel aluminum or.

There are different kinds of roofing nails made of different materials and in various sizes. Seems 1 1 4 nails are recommended. When installing asphalt shingles on felt only to any grade decking you should use 1 inch long roofing nails. Nail application of asphalt strip shingles for new and recover roofing nails are required to have a minimum nominal shank diameter of 12 gauge 0 105 and a minimum head diameter of 3 8.

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. Roofing nail should have a barbed shank until the head which eliminates nail pops blow offs and roof leaks. 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. The international building code requires that roofing nails have a minimum 12 gauge shank and a 3 8 inch diameter head.

The more common roof thickness is 3 4 inch decking. 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. Nails should be corrosion resistant. Most of the nails do not come through the plywood.

More than 1 layer of roofing not recommended over 3 8 sheathing. The nails used are 1 2 3 4. It is outside in a yard. Nails that are longer than six inches are called pikes and they are seldom used on roofs.

When nailing shingles proper penetration into the roof deck is essential to ensure the nail and shingle remain secure. The one to two inch roofing nails are suitable for most types of roof shingles.