Humber/Ontario Real Estate Course 4 Exam Practice

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What is a common cause of squeaking floors?

Uneven joist installation.
Swelling of the wafer board sub-floor due to water damage.
The installation of thin sub-flooring.
Inadequate securing of the sub-floor to the joists.

The correct answer is: Inadequate securing of the sub-floor to the joists.

Inadequate securing of the sub-floor to the joists is a common cause of squeaking floors. When the sub-floor is not properly secured to the joists, it can create movement and friction between the two, leading to squeaks when weight is applied to the floor. Uneven joist installation, the swelling of the wafer board sub-floor due to water damage, and the installation of thin sub-flooring can also contribute to squeaking floors, but inadequate securing of the sub-floor to the joists is specifically mentioned as a common cause in construction that often results in squeaky floors.