How to Prevent and Reduce Condensation on Windows

Under certain conditions, window condensation can occur both inside and outside your home, but your windows are not the cause of the condensation. Here are a few tips to help you reduce condensation on your windows.

Question: What is window condensation?

Answer: Condensation is the presence of air moisture or humidity coming in contact with a surface.

Condensation, or “sweating” on windows, is caused by humidity or excess moisture in the air. When the water vapor comes in contact with a surface the vapor condenses. Condensation can occur on windows during the winter if the humidity inside your home is too high. Learn more about condensation here.

Question: How can I reduce or prevent condensation on my windows?

Answer: Here are a few things you can do to help control moisture levels in your home
  • Use kitchen and bathroom exhaust fans.
  • Make sure your attic, basement, and crawl spaces are well ventilated and free from obstructions.
  • Don’t store firewood inside. Freshly cut wood can consist of up to 45% water, while well-seasoned firewood can have a 20-25% moisture content. All of which can be released in your home.
  • Open curtains and blinds to allow more air circulation around windows.

More questions? Click below for a free copy of our condensation brochure.


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