Basement Humidity Level

  • Tanya Schifone
  • April 12, 2012 2:53 pm

Basement humidity is very important because if your basement is too humid, the moisture from your basement will travel up through your home as demonstrated in the image below.

The ACCA (Air Conditioning Contractors of America) suggest that maintaining a 45% to 55% humidity level year-round has many benefits to your health, home, and basement. If your basement has a higher humidity level, mold and mildew can grow and bacteria and viruses can form. If your humidity is lower, it isn’t a bad thing because the soil surrounding the basement is cool so the air inside the basement should be dry. If your basement has a high humidity level it is because moisture from the surrounding soil is being pushed into your basement through the concrete. The best preventative method you can take is to seal your basement using a deep penetrating sealer. These sealers, like the Foundation Armor Concrete Sealer, will stop water from entering your basement. For most homeowners, sealing your basement will dramatically reduce humidity levels.

Basement Humidity Symptoms

Not sure if you basement is at the right humidity level? The best thing you can do is purchase a humidity thermometer. That is the most accurate way to measure basement humidity levels. Aside from having a humidity thermometer, you can also look for “signs”:

Common Symptoms

High Humidity (Use Dehumidifier)

Low Humidity (Use Humidifier)

Allergic Reactions

Chapped Lips and Skin

Musty Odors

Respiratory Problems

Mold Growth

Static and Sparks

Stains on Ceilings and Walls

Scratchy Nose and Throat

Condensation on Windows and Mirrors

Damage to Electronic Equipment

Reduce Basement Humidity Levels

As mentioned above, the best way to reduce or control basement humidity levels is by sealing your basement floors and walls. If your basement has a high humidity level it is because moisture from the surrounding soil is being pushed into your basement through the concrete. The best preventative method you can take is to seal your basement using a deep penetrating sealer. These sealers, like the Foundation Armor Concrete Sealer, will stop water from entering your basement. For most homeowners, sealing your basement will dramatically reduce humidity levels.

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