Air from the crawlspace often rises into the living space through the stack effect. A cleaner, drier crawlspace can mean fewer musty odors and airborne contaminants inside the home.
Damp crawlspaces create ideal conditions for mold. A vapor barrier helps keep the area drier, reducing the likelihood of mold growth on wood framing, insulation, and subflooring.
Moisture in crawlspaces can also condense on ductwork, pipes, and HVAC equipment, leading to rust, corrosion, and water damage. Vapor barriers help reduce this risk.