Water in the crawl space. Just thinking about it is something you’d probably prefer to avoid, if at all possible. But that creepy, claustrophobic zone underneath your house may in fact conceal water accumulation from a variety of sources. Ignoring water in the crawl space won’t make it go away.

Moreover, the consequences of hidden water down there can mean costly damage and also show up in a home dweller’s health issues.

A properly maintained crawl space should ideally remain dry and dusty in normal conditions. If water intrusion is recurrent, but the negative consequences associated with continuing wetness from the crawl space comprise:

Rotting wood structural elements such as floor joists and plywood sub flooring.
Toxic mold growth contaminating living spaces above.

  • Elevated indoor humidity as water vapor migrates upwards into the house.
  • Disintegrating insulation and deteriorated electrical wiring.
  • Water intrusion to HVAC ductwork routed via the space.
  • A friendly habitat for rats, snakes, insects and other vermin attracted to moisture.

Where’s The Water Coming From And How Do I Stop It?

Here’s the way water from the crawl space can originate from interior or outside sources and what’s required to resolve the issue:

Leaking water distribution lines. Leaks, leaking or seepage from plumbing pipes can gradually turn a crawl space into a swamp. An inspection by a qualified plumber is usually necessary to pinpoint and repair leakage.

Ground water rising. Whether or not seasonally, rising groundwater may affect the crawl space. Installation of a vapor barrier across the dirt floor can keep dampness in chronically moist soil from affecting the house. However, to effectively control actual water accumulation, the installation of a sump pump is usually demanded.

The incorrect landscape grading. Landscaping around the house perimeter ought to be graded to divert water away from the crawl space and out into the yard during rain.

Clogged gutters. Water overflowing from blocked gutters may penetrate the crawl space under during heavy rain. Inspect gutters regularly for blockages. Also ensure that gutter downspouts extend far enough to discharge water at least three from the house to keep it out of the crawl space.