How many nails per shingle?
Quick Answer
Standard roofing installations require 4 nails per shingle placed just below the tar strip. In high-wind areas (wind zones 2–3, or where code requires), use 6 nails per shingle. With 4 nails per shingle and 3 bundles per square, a 20-square roof needs approximately 2,340 roofing nails (26 shingles × 3 bundles × 3 squares × 4 nails = rough estimate).
Quick Reference Table
| Condition | Nails per shingle |
|---|---|
| Standard (wind ≤ 60 mph) | 4 nails |
| High wind (60–150 mph) | 6 nails |
| Low-slope (2–4:12 pitch) | 6 nails |
| Hip/ridge shingles | 2 nails each |
| Starter strip | 3–4 nails per piece |
| Nails per square (4-nail) | 320–340 nails |
How to Calculate It Yourself
- 1
Place nails 1 inch from each end of the shingle, and evenly spaced between for 4-nail pattern.
- 2
Nail location: 5/8" above the cutout (for 3-tab) or along the nailing zone marked on architectural shingles.
- 3
Nail length: minimum 1-1/4" for new decking, 2" when nailing over existing shingles.
- 4
For a complete roof: (total squares × 3 bundles × shingles per bundle × nails per shingle) + 10% extra for misses.
Pro Tip
Use ring-shank roofing nails — they hold 40% better than smooth shank. Minimum 12-gauge, galvanized or stainless. Hand-driven nails seat more consistently than pneumatic guns on cold days when shingles are brittle.
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