Understanding Condensation

Ever wonder why condensation forms on your windows and what you can do to prevent it? Below is a collection of questions and answers designed to provide you with a better understanding of what condensation is and how to
minimize it.

What causes condensation on windows?

Whenever there is excess humidity in a home, it manifests itself in the form of condensation on the coldest area of a wall, which is normally the windows. The warmer the air, the more moisture it will retain, so when air in your home comes in contact with the colder glass surface, it is subsequently cooled and moisture is released in the form of condensation on the glass.

Do windows cause condensation?

No, condensation on windows is not the fault of the window. However, by replacing drafty windows and doors or installing a new roof or siding, you are reducing air flow in your home and making it tighter. Tighter homes actually retain more humidity.

Can I reduce the condensation on my windows?

Yes. In order to reduce condensation, humidity must be controlled and air movement must be generated. As the exterior temperature drops, the humidity level needs to decrease if condensation is to be controlled. What steps can I take to reduce humidity in my home? The two main things you can do are to increase ventilation and control sources of moisture. To learn more about increasing ventilation click here.