HAAG Certified Reviewer

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In high wind zones, how many nails are required for standard three-tab composition shingle installation?

The correct answer is: 6

For standard three-tab composition shingle installation in high wind zones, six nails per shingle are required to ensure adequate attachment and performance. The purpose of using six nails is to enhance wind resistance and minimize the risk of shingles being dislodged during severe weather events. This increased fastening helps to maintain the integrity of the roofing system, reducing potential damage from wind uplift. In contrast, other options would not meet the rigorous requirements set for high wind zones. Using fewer than six nails could compromise the roof's performance under high stress and wind conditions, which is critical for maintaining the longevity and effectiveness of the roofing materials. The six-nail pattern ensures that each shingle is securely fastened and supports the overall durability of the roofing installation.