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Crawl Space Moisture

Crawl Space moisture comes from two sources- the ground and outdoor air.
 

Ground moisture finds its way to into the crawl space due to the negative pressure atmosphere which exists under all houses. That moisture, especially in the summertime, becomes water vapor that moves upward into the house. In most climates where there are dirt crawl spaces, you can never dry the earth entirely, and the invisible stream of water vapor from the exposed earth in a crawl space goes on forever.

The second source of moisture in a crawl space is water from the air. The summertime climate in Maryland and especially the Eastern Shore often provides high levels of relative humidity allowing for more moisture to be circulated in and out of the crawl space. This source of moisture often leads to tropical rain forest effect inside the crawl space. HVAC equipment, floor joists and insulation will become saturated with warm, moist air and begin the sweat.

Both sources of moisture in the crawl space can lead to lasting effects on the home and its occupants. Long term effects include mold and wood rot to the structure, upper respiratory and asthmatic symptoms to the homeowners and continuous foul odors inside the home. Solving ground moisture issues is the first key step created a healthy indoor environment in the home.

 

 

 

 

Getting to Know Your Crawl Space | Crawl Space Moisture | Dirt Crawl Space | Wet Crawl Space | Crawl Space Drainage | Sump Pumps | Crawl Space Ventilation | Crawl Space Insulation | Crawl Space Air Sealing | Crawl Space Dehumidifer