Certified Energy Auditor Practice Exam

What is the purpose of a capillary break in construction?

1. Improve aesthetic appeal

2. Reduce moisture transfer

3. Enhance structural integrity

4. Lower energy consumption

The correct answer is: Reduce moisture transfer

The purpose of a capillary break in construction is to reduce moisture transfer. A capillary break is typically a physical layer or material that interrupts the movement of moisture through capillary action. This is crucial in building foundations and walls, as moisture can lead to a variety of problems, including mold growth, material deterioration, and structural damage. By limiting the movement of water, a capillary break helps to maintain a dry environment, which in turn protects the integrity of the building materials and the overall structure. The other options may contribute in different ways to a building's performance but do not accurately reflect the specific role of a capillary break. Aesthetic appeal pertains to design choices, structural integrity is more related to the fundamental strength of materials, and energy consumption relates to insulation and HVAC systems. Therefore, understanding the primary function of the capillary break reinforces the importance of moisture management in construction.