Carpenter Red Seal Exam Prep · Question
Which statement best describes the primary function of an air barrier in a building envelope?
The primary function of an air barrier is to control the unintentional movement of air (bulk airflow) across the building envelope. This prevents heat loss/gain
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Question: Which statement best describes the primary function of an air barrier in a building envelope?
Answer options:
- To prevent the migration of moisture vapour through diffusion ✅ To resist the bulk flow of air into and out of the building
- To provide a continuous layer of thermal resistance
- To drain incidental water that penetrates the exterior cladding
Correct answer: To resist the bulk flow of air into and out of the building
Explanation: The primary function of an air barrier is to control the unintentional movement of air (bulk airflow) across the building envelope. This prevents heat loss/gain through convection and reduces moisture transport.
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- When interpreting a foundation plan, a dashed line with 'P. WALL' typically represents which of the following?
- A site plan shows contour lines with an interval of 0.5 m. If two adjacent contour lines are labelled 124.0 m
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