How Long Should Roof Nails Be Single Dimensional Shingle Plywood

The one to two inch roofing nails are suitable for most types of roof shingles.

How long should roof nails be single dimensional shingle plywood.

Wood shingles minimum 3 4 sheathing wood shingles nail type minimum length 18 straight split 3d box 1 1 4 18 and 24 handsplit and resawn 4d box 1 1 2. The screw shank nails. Nail spacing for sheets of osb and plywood is 8 inches per nail. 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.

It s a good idea to use at least 40 year shingles. Their tab slots should not line up with the tab slots of the starter course if there are any. 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. Fasteners must be driven flush with the surface of the shingle.

The thicker the new shingle the better it will hide any imperfections in the roofing below. Architectural shingles are an even better choice. Also place a nail 2 inches from each end of the shingle in line with the other two. If you need bigger nails including pikes you may need to place a special order at the hardware store.

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. Nail the shingles just above the tab slots. The most commonly used roofing nails range from one to two inches in length. Place nails in the three tab shingles about 3 4 inch 1 8 centimeters above the cutouts near where the tab meets the upper part of the shingle.

However make sure that you do not nail into the tar strip. Use only zinc coated steel or aluminum 10 12 gauge barbed deformed or smooth shank roofing nails with heads 3 8 10mm to 7 16 12mm in diameter. This means that you ll need to use six nails per each truss that runs under the sheathing because each sheet measures 4 feet wide by 8 feet long.