Should Roofing Nails Go Through The Sheathing

Using a 1 inch nail is best.

Should roofing nails go through the sheathing. These pieces of plywood need something heavy duty to keep them from slipping off the roof. There are typically 12 16 or 24 inch spans between each roof truss. You ll need to use nails wherever the roof sheathing makes direct contact with each truss. Yes it is important that roofing nails are long enough to penetrate the sheathing.

Roof truss spacing will vary on the structure s construction. 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. The sharp tip of the roofing nail should completely pass through and extend approximately 3 8 inch past the underside of the roof sheathing. This nail probably was driven very close to the horizontal seam of the sheets of plywood under the shingles.

Roofing contractors have told me electro galvanized nails that stick out past the sheathing edge can attract water which can prevent the wood deck from absorbing the moisture and rotting. A home with exposed eaves normally has a beadboard or similar type of wood on the exposed portion if this is the case and nails are poking through your roofer needs to fix this for you. In fact in most states the minimum length of the nail for roofing is 1 inches. With the shingles and inch sheathing the nails should protrude about inch through.

Ask contractors how building codes may affect the appearance of your exterior projects and discuss cosmetic options before the job begins. Holding the roof together. It is vitally important that roofing nails of the correct length were used to secure the shingles. It makes sense to use nails to attach the decking or sheathing into place.

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.