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Basement Moisture Control
With moisture problems, the best approach is almost always to remove or control the source of the moisture, not to try to stop it at the last line of defense. Though it is appealing to solve a basement moisture problem with a membrane or coating on the inside of the foundation as these painted wall coverings are less expensive than a drainage system, the water is still there. Eventually these systems deteriorate or simply move the water to another pathway into the basement. There is no paint or magic spray that works 100% of the time and that lasts for any length of time.
The most effective approach to removing internal moisture, and reducing the relative humidity present in the basement is to install an active sub-slab depressurization system including a sub-floor drainage system, and washed-rock layer below the slab This draws moist air from beneath the slab and reduces the amount of moisture vapor that enters the home through openings in the concrete slab. It also assists in controlling radon and other soil gases. Budget Dry recommends the installation of sump pump basins and interior drainage systems below the slab that are sealed.
Moisture in the home has many sources: plants, pets, people, cooking, washing, ground water, and infiltration of outside air. With moisture levels above 55% relative humidity can create musty odors and can also stimulate the growth of mold, mildew, bacteria, and other biological allergens. To avoid the problems caused by moisture, a properly sized dehumidifier is necessary to maintain relative humidity between 45-50% throughout the home—including the basement. This creates a less hospitable environment for molds, bacteria, dust mites, centipedes, silver-fish, spiders, and other pests. Your basement can then be used for additional comfortable living space and the safe storage of clothing, books, heirlooms, and collectibles.
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