Roofing Nail Length

The minimum fastener length for an asphalt shingle roof in minnesota is 1 1 4.

Roofing nail length.

Roofing nails range from one to six inches in length. Where the roof sheathing is less than 3 4 inch 19 1 mm thick the fasteners shall. Use the 3 4 and just 6 nail the shingles. More than 1 layer of roofing not recommended over 3 8 sheathing.

Which means it s also acceptable to use 1 roofing nails on asphalt shingles. Looking at a 2005 tile roof installation manual it looks like the minimum penetration of a roofing nail into roof sheathing was 3 4. 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. Yeah i just assumed he was guessing and it actually was a 3 4 or 7 8 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. The length of the nail is the shank and the shank can also vary. Don t know that i ve ever seen a half inch roofing nail. 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.

Planning and executing a good roofing job requires knowledge of every aspect of the job. 1 2 is too small. 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. Note that roofing nails come in different sizes lengths and gauges.

A 1 nail will fully penetrate through 3 8 roof sheathing but it won t fully penetrate 1 2 sheathing. 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. 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. Another kind of classification for roofing nails is by size.