Will condensation between window panes go away?
Not for good. Fog between the panes can fade on a warm, dry afternoon and come back the next cold morning, because the moisture is trapped inside a sealed unit whose seal has failed. Over time it leaves a milky haze and mineral spots that do not clear at all. The lasting fix is a new glass unit.
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Why it seems to come and go
The trapped air holds the same moisture all the time. When the glass is cold, that moisture condenses on the inside faces and you see fog. When the sun warms the glass, it turns back into vapor and the view clears, so a window can look fine at noon and fogged at dawn. A DOE Building America Solution Center guide says condensation between the inner and outer panes means the seals of the insulated glass unit have failed. Each cycle leaves a little residue on the glass, so the haze gets worse, not better.
Between the panes, or on the room side?
Wipe the glass with a dry cloth on the room side, then outside. If the fog comes off inside, it is room-side condensation from indoor humidity, a different problem covered in condensation on the inside of windows. If it stays put from both sides, it is between the panes, and foggy window repair replaces the sealed unit in your existing frame.
Related questions
- Can foggy windows be repaired?
- Can you get rid of fog between window panes yourself?
- Why do double pane windows fog up between the panes?
- How much does it cost to fix a foggy window?
- Does homeowners insurance cover a broken window seal?
- If one window is foggy, do I need to replace all of them?
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Fog that keeps coming back?
Send us a photo for a free estimate, or call (202) 600-6220.