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Foggy glass windows can leave damaging puddles on your windowsill and obstruct your view of your property. If you’ve been struggling with your glass doors and windows fogging up, understanding what causes it can help you prevent it or know when it’s time to call in a professional.

Why Are My Glass Windows Fogging Up?

1. High Humidity or Temperature in Your Home

If there’s a lot of moisture in the air inside your home, it’s easier for it to collect against the cool panes of glass in your windows. Warm air, in particular, carries a lot of moisture.

The first plan you should try if your windows won’t stop fogging up is to turn down your thermostat by a few degrees. If humidity is also a factor, get a dehumidifier or ventilation system for moisture removal and keep the air circulating.  

2. Too Close to Showers, Dryers, & Cooking Surfaces

glass windowsImportant appliances in your house -- like showers, dishwashers, and boiling water for food -- release humidity and steam into the air. Windows especially close to them will probably fog more. If you’re able, install a ventilation system or fan near these appliances to direct the warm, humid air away from the windows.

3. Failed Seal in Multi-Paned Windows

Older homes may have windows with double or triple panes, which serve to keep them insulated. Over the years, the seal between the panes can break down and fail, allowing moisture and heat to get trapped between the panes, causing them to get cloudy. If this is the case, you may need to replace your windows or have a professional correct the issue.


If the seal in your glass windows has broken, the experts at The Glass Guru of Macedonia in Summit County, OH, will help. With over 15 years’ experience, they’ll professionally restore your windows without removing the glass to rid you of future fog problems, at a fraction of the cost of replacements. Beyond fog and moisture removal, they offer dependable glass door and window repairs backed by 10-year warranties. Learn more about their fogged window solutions online, and call (330) 467-5318 to schedule a consultation.

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