General Contractor Practice Exam

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When installing vinyl siding horizontally, what is the maximum vertical spacing for fasteners?

10 inches
12 inches
14 inches
16 inches

The correct answer is: 12 inches

When installing vinyl siding horizontally, the maximum vertical spacing for fasteners is indeed 12 inches. This spacing guideline is crucial because it ensures the vinyl siding is securely attached to the structure. Fasteners spaced too far apart could lead to inadequate support, resulting in sagging or shifting of the siding over time, especially in adverse weather conditions. The 12-inch spacing helps to distribute the load more evenly across the siding panels, allowing for proper expansion and contraction as temperatures change. Additionally, this spacing accommodates the natural movement of the siding material, helping to prevent warping or other damage. Using appropriate fastener spacing is essential for maintaining the integrity and longevity of the siding installation, ensuring that the siding performs well against elements such as wind, rain, and temperature fluctuations.