Condensation
Windows bring you more than sunshine and a view of the outdoors. They also can help you protect your home and your health.
Foggy windows are a sign of indoor humidity that can eventually lead to costly problems, such as peeling paint, rotting wood, buckling floors, insulation deterioration, mildew, and even moisture spots on ceilings and walls. Here are some common questions about condensation:
Do Windows Cause Condensation?
No. Windows do not cause condensation. Windows are most often the first places where condensation can be seen.
What does cause condensation?
Condensation forms when warm, humid air contacts a cold surface. Moisture is in the air all around us. Warmer air can cause more moisture. As air cools it contracts and its moisture condenses.
When the temperature drops, the first place you will see any condensation is on the windows. Your windows are the coldest surfaces indoors. During colder months, indoor air is much warmer and holds more moisture than outdoor air, which is colder and dry. Warm humid indoor air cools and contracts as it contacts the cooler windows, and the moisture condenses on the glass.