A nail over reroof is the process of nailing over your current asphalt shingles with new ones.
Nailing asphalt roof shingles.
How to nail asphalt roof shingles to resist wind damage roof damage to asphalt shingles caused by high winds from hurricanes tornados and other storms can be reduced by.
Use the correct roofing nail material size and grade as specified in the shingle installation instructions.
The specific recommendations of the shingle manufacturer as printed on each shingle wrapper must be followed to ensure the intended performance and compliance to building codes.
Drive nails flush with the shingle but not deep enough to damage the shingle.
Apply six nails to each shingle rather than the standard four.
If this technique isn t possible replace the entire shingle.
Fasten shingles with corrosion resistant nails.
To ensure optimal performance of your asphalt roofing shingles be sure to follow these general directions for proper nailing.
The placement of nails is of the utmost importance when installing a new or recovered roof.
For the sake of this article we re going to talk about a nail over reroof.
Repair the resulting hole with asphalt roof cement astm d4586 compliant and place another nail nearby but not in the same spot.
Fasteners for asphalt shingles shall be galvanized steel stainless steel aluminum or copper roofing nails minimum 12 gage 0 105 inch 3 mm shank with a minimum 3 8 inch 10 mm diameter head astm f 1667 of a length to penetrate through the roofing materials and a minimum of 3 4 inch 19 mm into the roof sheathing.
For some shingles and for some application circumstances the required number of nails may be different.