Roofing Nail Length

Roofing nails should be long enough to penetrate the roofing material and go 19 mm into osb solid wood plywood or non veneer wood decking or through thickness of decking whichever is less.

Roofing nail length.

Where the roof sheathing is less than 3 4 inch 19 1 mm thick the fasteners shall. The minimum fastener length for an asphalt shingle roof in minnesota is 1 1 4. The length of the nail is the shank and the shank can also vary. 1 2 is too small.

Standard lengths are between 1 and 2 inches 2 and 5 centimeters but they are also available at lengths of up to 6 inches 15 centimeters. Using the correct size of roofing nail will ensure that your roof stays intact for many years to come and can help you avoid the common problem of roofing nails that extract themselves over time and cause you to lose shingles. Yeah i just assumed he was guessing and it actually was a 3 4 or 7 8 nail. Note that roofing nails come in different sizes lengths and gauges.

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. A 1 nail will fully penetrate through 3 8 roof sheathing but it won t fully penetrate 1 2 sheathing. So if i assume 1 2 osb sheathing i should be able to cut the nails off with 1 4 still sticking through the sheathing into the attic. Looking at a 2005 tile roof installation manual it looks like the minimum penetration of a roofing nail into roof sheathing was 3 4.

The thickness of the nail is directly proportional to its length thus the longer the nail the bigger its size. Roofing nails minimum 12 gage 0 105 inch 3 mm shank with a minimum 3 8 inch diameter 9 5 mm head complying with astm f1667 of a length to penetrate through the roofing materials and not less than 3 4 inch 19 1 mm into the roof sheathing. Another kind of classification for roofing nails is by size. To determine the nail length you should consider the number of layers of shingles shingle thicknesses underlayment and flashings installed on eaves sidewalls and valleys etc.

Which means it s also acceptable to use 1 roofing nails on asphalt shingles. Don t know that i ve ever seen a half inch roofing nail. We normally use the 7 8 for that type of situation can t remember ever seeing 1 2 though they do all look short as hell. Planning and executing a good roofing job requires knowledge of every aspect of the job.