High nailing roof shingles is a common roofing mistake that can lead to serious issues such as leaks, wind damage, and premature shingle failure. In this article, we will explore the best practices for nailing roof shingles and discuss common mistakes to avoid. Whether you’re a professional roofer or a DIY enthusiast, understanding the correct nailing techniques is crucial for a long-lasting and reliable roofing job.

Best Practices for Nailing Roof Shingles

1. Nailing Placement:
2. Shingle manufacturers typically recommend nailing in the nailing strip, which is a reinforced area near the top of each shingle. This strip is designed to provide the optimal holding power and wind resistance.
3. Position the nails approximately 1 inch above the cutout (the lower edge of the shingle) and about 6 inches in from each edge.

4. Nailing Technique:
5. Use an appropriate nailgun or hammer to drive roofing nails.
6. Hold the nailgun or hammer at a 90-degree angle to the roof surface to ensure the nails are driven straight and secure.
7. Avoid overdriving the nails, which can damage the shingle, or underdriving, which can lead to inadequate attachment.

8. Nail Length:
9. The length of the roofing nails should be sufficient to penetrate through the roofing material, the roof deck, and into the framing below.
10. For standard asphalt shingles, roofing nails of 1-1/4 to 1-1/2 inches in length are typically suitable.

Common Mistakes to Avoid

1. High Nailing:
2. One of the most significant mistakes is high nailing, where nails are placed above the nailing strip, often in the exposed area of the shingle.
3. High nailing can lead to shingle uplift in windy conditions and create a pathway for water infiltration, potentially causing leaks.

4. Low Nailing:
5. Low nailing occurs when nails are placed below the nailing strip, near the lower edge of the shingle.
6. This can compromise the shingle’s wind resistance, leading to shingle damage and failure during storms.

7. Incorrect Nailing Spacing:
8. Inconsistent or incorrect nailing spacing can weaken the shingle’s attachment.
9. Follow the manufacturer’s guidelines for nail placement and spacing to ensure uniform and secure fastening.

10. Overdriven or Underdriven Nails:
11. Overdriven nails can create cracks and fractures in the shingle, while underdriven nails may not hold the shingle securely.
12. Nails should be driven flush with the surface of the shingle without causing damage.

Conclusion

Proper nailing of roof shingles is essential for the long-term performance and durability of your roofing system. High nailing, along with other common mistakes, should be avoided to ensure the shingles remain securely fastened and resistant to wind and water damage. By following best practices and adhering to the manufacturer’s recommendations, you can ensure a reliable and leak-free roof that stands up to the elements.