For all owens corning shingles roofing nails should penetrate into the wood deck by a minimum of inch or completely through the roof deck by a minimum of 1 8 inch.
Proper way to nail roof shingles.
General guidelines for nailing shingles.
However make sure that you do not nail into the tar strip.
In all use four nails per 3 tab shingle.
Be mindful of the proper nailing technique so that your nails always hold the top edge of the course beneath it.
You must place nails in the proper location and drive them flush with but not cutting into the shingle.
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Nail the cut off shingle into place about 6 inches from its lower edge.
Then secure another nail an inch above each cutout.
Make sure to keep nails out of the tar strip as you work.
When nailing shingles proper penetration into the roof deck is essential to ensure the nail and shingle remain secure.
Also place a nail 2 inches from each end of the shingle in line with the other two.
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.
Hammer one nail about 2 inches from each end of a shingle.
Hammer in one nail about 2 inches from each end of each shingle and another nail about 1 inch above each cutout.