How many roofing nails per square

For the average shingle, you should be using 2 nails per square.

This is assuming you are using the standard shingle size that is not cut.

  1. To start installing shingles, line up aluminum drip edge flush with the edge of the roof and make a pencil line at the top on each end of the house.
  2. Using the chalk line, snap a line between the two marks to get a straight edge.
  3. Pull the drip edge down about a half-inch from that line to create a gap between the drip edge and the fascia board.
  4. Nail the drip edge in place using 1¼-inch galvanized roofing nails and a hammer.
  5. Repeat steps for gabled ends, installing the drip edge up the roof along the gable.
  6. Layout 30-lb. asphalt roofing felt paper and nail it in place using 1¼-inch galvanized roofing nails.
  7. To layout, the design for the shingles, begin at the bottom of the roof and place a tape measure ½ inch from the edge of the roof to ensure the shingles overhang the drip edge.
  8. Mark 12 inches up on the roof for the first course of shingles, then mark every 5 inches all the way up the roof to set your reveal. Do this on both sides of the roof.
  9. Using the chalk line, snap a straight line on each 5-inch increment.
  10. Use the chalk line to snap a straight line vertically every 6 inches.
  11. Install a starter course by cutting off the three tabs on a shingle, leaving only the top tar section.

Should Shingles Overhang the Drip Edge?

Overhanging shingles over the drip edge about a half inch can help with surface tension. Plan out how you will lay your shingles beforehand, here’s how we recommend you approach your installation.

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