It s not that he used too long nails standard sizes.
Nails too long for roof.
Theyre only too long if you dont like them.
It has to be this way be careful.
You can just paint over them and live with the result or fill in the areas with wood covering the tips.
The more common roof thickness is 3 4 inch decking.
The number of nails needed for a roof varies on multiple factors such as board face width length and roof truss spacing.
Your home is over 50 years old in a warm wet climate so you should inspect for a number of different problems.
Looking at a 2005 tile roof installation manual it looks like the minimum penetration of a roofing nail into roof sheathing was 3 4.
I have giant nails in our roof too but i ve just opted to ignore them.
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.
Why would you inset your head between the rafters anyways.
Don t use nails or you will poke through the roof.
When installing asphalt shingles on felt only to any grade decking you should use 1 inch long roofing nails.
A structure s roof truss spacing can vary from every 12 to 24 inches.
It s that the roof sheathing is not thick enough for the nails.
If you do glue the wood with construction adhesive.
Standard roofing nails should not be long or thick enough to split or crack structurally sound dimensional lumber.
Boards used for sheathing range from those with a 4 inch face to 48 inch long plywood sheets.
Each of these factors plays a role in determining how many nails you ll need to use per board during roof sheathing application.
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.
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.
I d say who the hell uses 3 nails on a roof but then the previous owners used 16d nails as hangars everywhere.