Construction Supervisor License Practice Exam 2025 – All-in-One Study Guide for Exam Success!

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Residential windows, skylights and sliding glass doors have a maximum fenestration air leakage rate of how many cubic feet per minute?

0.30

The maximum fenestration air leakage rate for residential windows, skylights, and sliding glass doors is established to ensure energy efficiency and comfort in buildings. A rate of 0.30 cubic feet per minute is significant because it means that for every square foot of the fenestration area, the air leakage is limited to this amount. This standard helps to minimize the energy loss associated with air infiltration, ultimately contributing to lower heating and cooling costs and improving indoor air quality.

While the other options suggest higher leakage rates, the 0.30 figure aligns with recommended guidelines for energy performance in residential structures, which often come from standards set by the American Society for Testing and Materials (ASTM) or similar regulatory bodies. Therefore, this standard plays a crucial role in building codes and helps ensure that new constructions comply with energy conservation measures.

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