Which of the following is a moisture control strategy?

• A. Paint interior walls
• B. Seal water leaks (holes in envelope)
• C. Increase window area
• D. Install new carpet

Answer: (B)

Moisture control strategies focus on preventing water from entering and managing humidity in a building. Sealing water leaks in the building envelope directly stops water from penetrating through cracks, gaps, or openings. By keeping the envelope tight, you reduce dampness, condensation, and the conditions that foster mold, wood rot, and insulation degradation. That's why it’s the best choice.

Painting interior walls isn’t a moisture-control tactic; paint can improve finish but doesn’t block bulk water leaks. Increasing window area can worsen moisture problems by adding more potential leak points and more condensation on cold surfaces. Installing new carpet doesn’t address moisture sources and can trap moisture, potentially promoting mold growth if humidity isn’t controlled.