Better Air Quality Starts in Your Crawl Space

Half of the air you breathe on the first floor of your home comes directly from the crawl space below. If there's moisture, mildew, or mold under the house, that smell — and those spores — don't stay contained down there. They work their way up into your living space through gaps, ductwork, and floor penetrations.

The cleaner and drier your crawl space, the better the air quality throughout your entire home. A properly encapsulated crawl space, sealed with a heavy-duty vapor barrier and controlled with a dehumidifier, keeps ground moisture from ever becoming airborne moisture inside your house.

Signs Your Crawl Space Is Affecting Your Indoor Air

• A musty or mildew smell on the first floor, especially near vents or floor registers
• Condensation on windows or cool surfaces, even when the AC is running
• Allergy or respiratory symptoms that improve noticeably when you're away from home
• Visible mold growth on crawl space framing, insulation, or ductwork