North Carolina Building Contractor License Practice Exam

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The sidelap or offset for wood shingles and shakes must be _____ inches.

  1. 2

  2. 3

  3. 4

  4. 5

The correct answer is: 3

The appropriate sidelap or offset for wood shingles and shakes is typically 3 inches. This measurement is crucial for ensuring adequate coverage and preventing water infiltration, which can lead to leaks and structural damage over time. Proper sidelapping helps to create a continuous barrier against the elements, allowing shingles and shakes to properly shed water while still allowing for expansion and contraction related to temperature changes. In residential construction, adhering to this standard of 3 inches supports the integrity of the roofing system and minimizes the risk of wind uplift or other weather-related issues. This requirement also aligns with industry best practices and manufacturer's specifications, which emphasize adequate coverage for longevity and effectiveness of the roofing material.

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