09/23/2026
What Causes Foggy Windows Between the Glass Panes? 🌫️🪟
If your windows look cloudy or foggy between the panes, the problem isn't dirt—it’s a failed
window seal.
Here's what happens:
✔ Double- and triple-pane windows are sealed to keep insulating gas inside
✔ Over time, seals can deteriorate due to age, weather, and temperature changes
✔ Once the seal fails, moisture gets trapped between the panes
Can it be cleaned?
Unfortunately, no. Since the condensation is inside the insulated glass unit, regular window cleaning
won't remove it.
The solution: In most cases, the glass unit needs to be replaced to restore the window's appearance
and energy efficiency.