What is the minimum number of nails required for three-tab strip shingles?

Prepare for the Seabee BU A‑School Building Basics Test. Boost your skills with flashcards and multiple-choice questions, with hints and explanations provided. Gear up for success on your exam!

The minimum number of nails required for three-tab strip shingles is four nails per strip. This requirement is established to ensure adequate attachment and stability of the shingles on the roof, which is crucial for preventing wind uplift and water infiltration. The four-nail standard provides enough holding power while allowing for some movement of the shingles due to expansion and contraction, which can occur due to temperature changes.

Each shingle strip typically consists of three tabs, and placing nails in the designated zones helps secure the shingles effectively. Correctly nailing ensures that each strip overlaps properly, maintaining the roof's integrity and extending its lifespan. Thus, the rationale behind using four nails per strip is centered on achieving a balance of strength and flexibility in the roofing system.

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