Be mindful of the proper nailing technique so that your nails always hold the top edge of the course beneath it.
Proper way to nail roof shingles.
Nail the cut off shingle into place about 6 inches from its lower edge.
Then secure another nail an inch above each cutout.
You must place nails in the proper location and drive them flush with but not cutting into the shingle.
Proper nail placement is also a requirement for the shingles limited warranty coverage.
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General guidelines for nailing shingles.
Hammer in one nail about 2 inches from each end of each shingle and another nail about 1 inch above each cutout.
Make sure to keep nails out of the tar strip as you work.
Nailing the shingles correctly is critical to the roof system s wind resistance.
When nailing shingles proper penetration into the roof deck is essential to ensure the nail and shingle remain secure.
However make sure that you do not nail into the tar strip.
Also place a nail 2 inches from each end of the shingle in line with the other two.
So your next course of shingles should cover the nails by 1 inch vertically.
Place nails in the three tab shingles about 3 4 inch 1 8 centimeters above the cutouts near where the tab meets the upper part of the shingle.