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Basement humidity, moisture and condensation

Basement Humidity, Moisture & Condensation

Even foundations that don't actually leak can have humidity, dampness and basement condensation problems. Sometimes no actual water leakage is seen yet the basement still seems very damp, metal objects become rusted and the basement has a very bad odor. You "know" something is wrong but you just can't see it.

The reason you are having basement dampness problems starts with the fact that your foundation walls are underground, protected from sunlight, solar heat and warm summer air. Your basement remains "cooler" as the summer temperatures rise around it. Warmer air from upstairs or outside shrinks or "condenses" as it enters your basement. The air becomes saturated because there is less air volume to hold all the moisture. The excessive moisture is readily absorbed into porous materials like cement, masonry, wood, furniture, etc.

Solutions: Purchase a basement dehumidifier that has these features; a drain hose (instead of a bucket that must be emptied), a de-icing feature and a large enough capacity for your size basement.

Keep your doors and windows closed on your lower level to limit outside air entry.

As your dehumidifier dries out the air, natural evaporation will occur and encourage the porous building materials and items stored in your basement to start drying out. A fan in opposite areas will help move the air around to encourage uniform drying.

Basement humidity control is a huge factor in creating acceptable indoor air quality.