North Carolina Building Contractor License Practice Exam

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Nails used to install mechanically laminated flooring should be how many times as long as the thickness of the boards?

  1. 3 times

  2. 5 times

  3. 7 times

  4. 10 times

The correct answer is: 10 times

When installing mechanically laminated flooring, the nails should be ten times the thickness of the boards being used. This guideline ensures that the nails securely anchor the flooring in place, providing the necessary holding strength to cope with the stresses placed on the flooring. A longer nail penetrates deeper into the subfloor, which enhances stability and reduces the risk of squeaking or shifting over time. This is particularly important with laminated flooring, as the layers can be subject to movement due to temperature and humidity changes. Therefore, using nails of this length maximizes the effectiveness of the installation, ensuring a durable and long-lasting floor.

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