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