Licensed & Insured. Crawl space Encapsulation and Mold Remediation

Why is mold growing in my crawlspace?

why is mold growing in my crawlspaceMold cannot grow without moisture or high humidity, so a thorough investigation is necessary to determine the cause of elevated moisture and water in the crawl space. In most cases, several minor conditions have contributed to creating a major problem:
  • Gutter and downspout extensions (a concrete splash block does not count). Here are the numbers: for every 1500 square feet of roof and inch of rain, 1000 gallons of water are channeled off of the roof. If the gutters do not catch the water, or the downspout extensions do not carry the water at least 6 to 10 feet away, all of that rain can make its way into the crawlspace
  • The drainage of the yard can slope toward the house and allow rain water to run into the crawlspace
  • Condensation on the ductwork, can contribute to high humidity and water puddles in the crawlspace
  • HVAC duct can get damaged or loosened and create a crack which allows the wood components to be cooled, which creates condensation in the humid crawlspace
  • The condensate drain from the HVAC unit can deposit up to 20 gallons of water per day and is sometimes dumped at the edge of the foundation, or worse, into the crawlspace
  • Many plumbing leaks in the crawlspace have been found after they have created some damage
  • A crack in the foundation wall or exterior wall sealant can allow excess ground water to enter the crawlspace
  • Rain penetrations through the building envelope such as the seam where the porch joins the house, window and door openings, improperly installed J-channel on siding, inside corners, or unsealed building exteriors
  • Dryer vents have been found ducted into the crawlspace and can introduce warm, humid air in addition to the lint
  • An inadequate or nonexistent vapor barrier can allow excess ground moisture to evaporate into the crawlspace
  • Inadequate foundation vents or leaving them closed in the summer can hold excess humidity in the crawl space
  • A low clearance crawlspace does not provide as much air space to “dilute” any excess humidity in the crawlspace
  • An underground or wet-weather spring in the crawlspace can be an explanation after other solutions have been exhausted
For more information on water damage or mold remediation, click here
For more information on air duct cleaning and duct repair, click here
For more information on indoor air quality, how mold might make you sick, allergies and health, click here
Picture of Greg Lewis

Greg Lewis

Greg Lewis is the founder and CEO of Tier Restoration, a company dedicated to restoring the indoor environment of homes and businesses experiencing water damage, smoke damage, or mold contamination.

Greg has spent most of his life working in this industry in Nashville, Tennessee, in the 1970s, working in his father’s commercial cleaning business, in the 1980s and 1990s as a partner with his father in the Sears Carpet and Duct Cleaning franchise, then on his own since 2000.

Greg played his trumpet at Overton High School and the University of Tennessee, Chattanooga, and you can still find him playing throughout the Greater Nashville, Tennessee area.