One inch roofing nail the other way to determine if the proper nails were used is to look in the attic.
Protruding roofing nails.
A roofing nail should have a minimum nominal shank diameter of 12 gauge 2 67 mm and a minimum head diameter of 9 5 mm.
Or there is spray foam insulation to consider if that works with your other insulation and vapor barrier situation.
Roofing nail should have a barbed shank until the head which eliminates nail pops blow offs and roof leaks.
For example galvanized by various processes aluminium copper or stainless steel.
Protruding nails can actually be a good thing.
A large nail head and heavier shank gauge provide greater holding power.
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.
Hammer a new nail into the roof about 1 inch above the hole from the previous nail.
The protruding nails will help hold it in place there are also adhesives for foam that come in std.
If the roof has 1 2 sheathing you should be able to see the nails sticking through in to the attic.
Proper nail visible in attic.
All nails must be corrosion resistant.
Our contractor said b c our decking was so thin 3 8 the 1 1 4 nails protruded but its ok b c if he used 3 4 shorter nails it would risk.
3 degree electro galvanized steel roofing nails 5 lb pack for applying roofing asphalt shingles insulation board and felt to wood substrates.
We just had a new asphalt shingle roof put on and were concerned because hundreds of the roofing nails used to nail down the shingles are protruding through the overhangs of the eaves.
If you have a friend in the attic ask him to direct you to a sturdy spot where the nail can bite into the wood.
Use the grip rite 11 x 1 1 4 in.
If you use your attic for storage and need protection buy an insulating foam and have it sprayed against the walls.
3 use the grip rite 11 x 1 1 4 in.