Roofing Nail Length For 3 4 Plywood

This 3 4 spec is most used round here for exposed decorative tongue and groove decking.

Roofing nail length for 3 4 plywood.

The thickness of the nail is directly proportional to its length thus the longer the nail. 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. System november 19 2014 9 56pm 5. Note that roofing nails come in different sizes lengths and gauges.

Roofing nails range from one to six inches in length. If your decking is less than 3 4 inch then a 1 1 2 inch nail will suffice. The flush set of the appropriately colored nail head will blend in with the darker seam color of the panel. Pound the nails in with a hammer and then tap them in flush with a nail set.

Size length and gauge of nails. To determine the nail length you should consider the number of layers of shingles shingle thicknesses underlayment and flashings installed on eaves. Boards used for sheathing range from those with a 4 inch face to 48 inch long plywood sheets. A structure s roof truss spacing can vary from every 12 to 24 inches.

More than 1 layer of roofing not recommended over 3 8 sheathing. 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. Before you go shopping for roofing nails you need to have an idea of what you are looking for. For dimensional shingles being installed over a layer of existing dimensional shingles you should always use a 1 1 2 inch roofing nail.

On lumber type decking then a minimum of 3 4 penetration and a irregular nail shank. The specification for this states that on plywood or osb roof decks the nail shall penetrate past the point with the shank exposed. Stainless steel annular ring shank roofing nail 150 pack.