Moisture on floor and wall. Where is it coming from?

Answered by Brendan ~ April 14, 2010 ~ Comments

I have what appears to be water (moisture) on the floor and wall in one of the bedrooms. I asked a roofer to check is see if I needed a new roof. I was told that my roof is fine. What else could this be? I see what looks like little water marks on the wall and floor.

E.D. ~ Doulgassville, Missouri

Brendan Fowler

There are many sources of moisture/humidity that will increase your homes interior humidity levels. Humidity levels can increase enough to cause condensation on interior surfaces. A poorly ventilated and sealed home will allow moisture in. Showering and bathing generate lots of moisture. If this bedroom is connected to a bathroom, be sure to use a bathroom vent fan and make sure that the fan is venting to the outside of your home. Make sure that your clothes dryer is venting to the outside of the house and not just into the attic or crawl space/basement. Hang drying clothes indoors also generates lots of moisture. Cook with a vent fan that terminates to the out side of the house. Check and make sure that there is no water in your crawl space or basement. Roof leaks, window leaks, siding leaks can all lead to increased indoor humidity. To combat your moisture problem you can run a de-humidifier to bring the indoor humidity into a range that eliminates your water problem.

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