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.

More than 1 layer of roofing not recommended over 3 8 sheathing. The number of nails needed for a roof varies on multiple factors such as board face width length and roof truss spacing. On lumber type decking then a minimum of 3 4 penetration and a irregular nail shank. Pound the nails in with a hammer and then tap them in flush with a nail set.

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. 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 nails range from one to six inches in length.

The flush set of the appropriately colored nail head will blend in with the darker seam color of the panel. 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. For dimensional shingles being installed over a layer of existing dimensional shingles you should always use a 1 1 2 inch roofing nail. The thickness of the nail is directly proportional to its length thus the longer the nail.

Note that roofing nails come in different sizes lengths and gauges. Boards used for sheathing range from those with a 4 inch face to 48 inch long plywood sheets. Simpson strong tie 0 131 in. A structure s roof truss spacing can vary from every 12 to 24 inches.

Before you go shopping for roofing nails you need to have an idea of what you are looking for. To determine the nail length you should consider the number of layers of shingles shingle thicknesses underlayment and flashings installed on eaves. The specification for this states that on plywood or osb roof decks the nail shall penetrate past the point with the shank exposed.