Roofing Nail Length For 1 2 Plywood

The roof structure is completely open and can be seen from underneath.

Roofing nail length for 1 2 plywood.

Nail spacing for sheets of osb and plywood is 8 inches per nail. If your decking is less than 3 4 inch then a 1 1 2 inch nail will suffice. Generally the nails are no longer than 1 inch but if they will be going through drywall increase the nail length to 1 5 8 inches. It is outside in a yard.

The 3 4 1 is most suitable for 1 4 thick plywood. Wood shakes minimum 3 4 sheathing wood shakes nail type minimum length. The 3 4 1 nail type should be brads. Pound the nails in with a hammer and then tap them in flush with a nail set.

Existing roof is a 3 tab shingle with 1 2 plywood. 4 feet equals 48 inches which you then divide by 8 to determine that you ll need six nails where the board comes in contact with a truss. The 4d 6d nails finishing are suitable if the plywood is 3 8 thick. For 1 2 thick plywood 6d 8d nails finishing are ideal.

Dimensional comp shingles over 3 tab 1 1 4 1 1 2 1 1 2 1 1 2 more than 1 layer of roofing not recommended over 3 8 sheathing. 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. Size length and gauge of nails. 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.

Seems 1 1 4 nails are recommended. The flush set of the appropriately colored nail head will blend in with the darker seam color of the panel. The nails used are 1 2 3 4. For dimensional shingles being installed over a layer of existing dimensional shingles you should always use a 1 1 2 inch roofing nail.

Note that roofing nails come in different sizes lengths and gauges. Before you go shopping for roofing nails you need to have an idea of what you are looking for. The thickness of the nail is directly proportional to its length thus the longer the nail. Most of the nails do not come through the plywood.