Protruding Roofing Nails
Proper nail visible in attic.
Protruding roofing nails. For example galvanized by various processes aluminium copper or stainless steel. A large nail head and heavier shank gauge provide greater holding power. 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.
Of the cutting methods the cut off wheel sounds the best to me. Protruding nails can actually be a good thing. 3 degree electro galvanized steel roofing nails 5 lb pack for applying roofing asphalt shingles insulation board and felt to wood substrates. The photo below shows proper 1 1 4 nails sticking through the roof sheathing on the attic side.
The protruding nails will help hold it in place there are also adhesives for foam that come in std. If you use your attic for storage and need protection buy an insulating foam and have it sprayed against the walls. 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.
3 use the grip rite 11 x 1 1 4 in. Unless you live in your attic the protruding nail heads shouldn t be a problem. 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. All nails must be corrosion resistant.
Use the grip rite 11 x 1 1 4 in. One inch roofing nail the other way to determine if the proper nails were used is to look in the attic. 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.