CONDENSATION
What causes window condensation and how to manage it
CONDENSATION
What causes window condensation and how to manage it
WHAT IS CONDENSATION?
Condensation occurs when moisture in the air comes into contact with a cooler surface, like your window glass, and turns into liquid water. This often happens when there’s a significant temperature difference between the inside and outside of your home.
To effectively reduce condensation on windows, it’s important to first determine its location. Is the condensation forming on the inside, the outside, or between the window panes? Let’s explore the causes of each area of condensation and tips to help prevent it.
CONDENSATION on the inside of your windows
Condensation on the inside of windows is more common during colder months. It occurs when warm, moist air inside your come comes into contact with the cooler surface of the window, causing the moisture in the air to condense into water droplets. Everyday activities like bathing, cooking and even breathing all contribute to the humidity in your home.
Here are some tips to prevent interior window condensation.
- Improve ventilation: Use exhaust fans in kitchens and bathrooms, and consider using a dehumidifier to reduce indoor humidity levels.
- Open your curtains or shades so warm air can reach your windows.
- Use ceiling fans to promote air movement.
In the winter months, you should aim for 30-35% humidity in your home to prevent condensation on windows and maintain a comfortable living environment.
CONDENSATION on the outside of your windows
Exterior window condensation occurs when the glass cools down and comes into contact with warm humid air. This is most common during summer months when humidity levels are higher outside. If the temperature of your window glass drops below the outdoor dew point, you may notice condensation, or dew, forming on the exterior surface. Dew forms when the air becomes fully saturated with moisture. Homeowners often see exterior condensation in the early morning, following a cool night. As the sun rises and warms the glass, the dew evaporates from the window.
Condensation on the outside of windows is nothing to worry about. In fact, it means your home is quite efficient. Nonetheless, here are a couple ways to reduce condensation on the exterior of your windows.
- Shade your windows: Use window coverings to prevent them from cooling too much during the night.
- Trim shrubs near windows to improve air circulation and help the sun warm the glass more quickly.
CONDENSATION between the glass
Condensation between the glass panes of double or triple-pane windows is an issue that indicates a problem with the window’s seal. Double and triple-pane windows have seals that keep insulating gas between the panes. Over time, these seals can deteriorate due to exposure to the elements, temperature fluctuations, and the natural aging process. When the seal fails, moisture can enter the space between the panes, leading to condensation. If you notice condensation between the glass of your window, it’s probably time to replace the window.
YOU CAN MANAGE CONDENSATION
You can manage condensation on the inside of your windows by adjusting your indoor humidity using the tips provided above. If condensation forms on the outside of your windows, there’s no need for concern—it’s caused by atmospheric conditions and will disappear when the sun comes out. Your windows are not at fault in either of these situations. However, if you notice condensation between the glass panes, it indicates a window failure and you should start planning for a replacement.