Roofing Nail Length

Which means it s also acceptable to use 1 roofing nails on asphalt shingles.

Roofing nail length.

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 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. Use the 3 4 and just 6 nail the shingles. Don t know that i ve ever seen a half inch roofing nail.

Planning and executing a good roofing job requires knowledge of every aspect of the job. 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. The minimum fastener length for an asphalt shingle roof in minnesota is 1 1 4. 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.

Roofing nails range from one to six inches in length. 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. 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. 1 2 is too small. 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.

The length of the nail is the shank and the shank can also vary. Where the roof sheathing is less than 3 4 inch 19 1 mm thick the fasteners shall. More than 1 layer of roofing not recommended over 3 8 sheathing. 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.