An odor in the crawlspace can be caused by the type of problem that you have. Many others have the same odor problem caused by moisture wicking through concrete floors and walls. Most crawl spaces lack heat in the winter and adequate ventilation in the summer.
Power exhaust ventilation is one of the best solutions to consider in this situation. High relative humidity contained in a crawlspace will cause mold growth as well as mildew odors. Crawlspace and basement exhaust vent units install up against the outside wall and vent to the outside like a dryer. Typically, the unit is controlled by an electronic dehumidistat that turns the unit on automatically when it senses excess moisture. One manufacturer of such a product is Humidex. (www.humidex.ca)
For more information on ventilation, visit our website at www.housesmartcentre.com and/or you can visit the website of Natural Resources Canada at www.oee.nrcan.gc.ca
To view products that can help you deal with moisture and ventilation problems in your crawl space, look under the “Ventilation” or “Humidity Control” categories within the Referral Network area of our website.