The answer varies, depending upon whether the condensation is on the Exterior Pane, the Interior Pane or Between the Panes.
Condensation on the outside of your windows or patio doors may occur during spring and in the fall, usually when cool nights follow a warm day. It is a result of moisture in the air exceeding certain limits and the temperature of the glass falling below the dew point in the air. Condensation on the exterior glass panes is a natural phenomenon, especially for energy-efficient insulating which restricts the airflow between the panes of glass. This condensation will evaporate once the day warms.
Condensation on the inside of a window indicates the humidity levels inside the room are higher inside than outside. Excess moisture on the inside of a window is unsightly and obstructs your view. Follow these easy steps to reduce the risk of excessive condensation.
- Check all windows and patio doors for smooth operation and airtight seals.
- Use exhaust fans regularly in rooms with high humidity (bathrooms, pool rooms, kitchens, etc.)
- Use a ceiling fan to continuously circulate air.
- Use dehumidifiers to reduce the amount of moisture inside homes with humidity problems.
- Open windows and doors when practical to reduce excessive moisture inside a home.
Between the Panes
When the seals along the outer perimeter of glass fail and allow moisture to penetrate the space between panes of insulated glass, your window or door will appear cloudy or fogged. Please check and make sure the glass does not have chemicals or pollutants on the outside surface. Once you confirm that the condensation is between the panes, the insulated glass unit will need to be replaced.