Nails Too Long For Roof

A structure s roof truss spacing can vary from every 12 to 24 inches.

Nails too long for roof.

Your home is over 50 years old in a warm wet climate so you should inspect for a number of different problems. 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. It has to be this way be careful. Theyre only too long if you dont like them.

Looking at a 2005 tile roof installation manual it looks like the minimum penetration of a roofing nail into roof sheathing was 3 4. Manufacturer specification and common sense dictate the nails penetrate the roof deck whenver possible. As far as dangerous the old nails were also through the roof deck i am sure. Boards used for sheathing range from those with a 4 inch face to 48 inch long plywood sheets.

It s not that he used too long nails standard sizes. I d say who the hell uses 3 nails on a roof but then the previous owners used 16d nails as hangars everywhere. Don t use nails or you will poke through the roof. Why would you inset your head between the rafters anyways.

Standard roofing nails should not be long or thick enough to split or crack structurally sound dimensional lumber. If you do glue the wood with construction adhesive. The number of nails needed for a roof varies on multiple factors such as board face width length and roof truss spacing. You can just paint over them and live with the result or fill in the areas with wood covering the tips.

Fasteners for asphalt shingles shall be galvanized steel stainless steel aluminum or copper roofing nails minimum 12 gage 0 105 inch 2 67 mm shank with a minimum 3 8 inch 9 5 mm diameter head astm f 1667 of a length to penetrate through the roofing materials and a minimum of 3 4 inch 19 1. It s that the roof sheathing is not thick enough for the nails. So if i assume 1 2 osb sheathing i should be able to cut the nails off with 1 4 still sticking through the sheathing into the attic. I have giant nails in our roof too but i ve just opted to ignore them.

The more common roof thickness is 3 4 inch decking.