How to Remove Moisture From Inside a Double Pane?
Last updated October 26, 2026
The short answer
Why Moisture Gets Inside
Double pane windows have two layers of glass with a sealed space between them, often filled with argon or air. When the seal breaks, outside humidity and temperature changes cause condensation to form inside that space. This is a common problem in humid climates, where moist air can seep in through tiny cracks.
Once the seal fails, you may notice fogging, water droplets, or even mold spots between the panes. The trapped moisture can also damage the window frame and nearby drywall over time. Acting quickly helps you avoid bigger water damage issues in your home.
Temporary Fixes to Try
You can reduce the fog with a dehumidifier placed near the window and a moisture absorber like silica gel inside the room. Use this only as a stopgap while you plan a proper repair.
Another option is to use a wet-dry vacuum to suck out visible water if you can access the gap. But remember, these methods do not restore the seal. They only buy you time until you can address the root cause.
- Run a dehumidifier near the window
- Place a moisture absorber on the sill
- Use a fan to keep air moving
- Wipe down any exterior moisture
- Check for cracks or gaps in the frame
When to Replace the Glass
If the moisture persists or the window is old, replacing the insulated glass unit is usually the right route. This involves removing the window sash and installing a new sealed pane. It is a job that requires precision, so many homeowners choose to have a professional handle it.
Before you decide, inspect the window frame for rot or damage. If the frame is compromised, you may need more extensive repairs. A local water damage inspection can help you understand the full scope of the problem and what steps to take next.
Preventing Future Moisture
To reduce the risk of seal failure, keep your home's humidity levels between 30 and 50 percent. Use exhaust fans in bathrooms and kitchens, and make sure your attic and crawl spaces are properly ventilated. In a humid subtropical climate, managing indoor moisture is key.
Regularly check window seals and caulking for wear. If you notice any gaps, seal them promptly. Also, clean your window tracks and weep holes to ensure proper drainage. These small steps can extend the life of your double pane windows.
Getting Professional Help
If trapped moisture has caused damage to your walls, floors, or window frames, you may need more than just a glass replacement. Water damage pros can assess the situation and recommend the right repairs. They can also help with drywall or flooring issues that often accompany window leaks.
When you contact a professional, describe the problem clearly and ask about their process. They will likely inspect the area, measure moisture levels, and suggest a plan. For significant water damage, a thorough inspection is a wise first step before any repair work begins.
- Ask about moisture detection methods
- Request a detailed inspection
- Discuss repair options for frame and drywall
- Inquire about drying and cleanup services
- Check your insurance policy for coverage details
Talk to someone now
Phones are answered 24/7 for Daytona Beach and nearby communities.
Call Now (386) 272-5697Frequently asked questions
Can I fix a double pane window myself?
You can try temporary fixes like drilling a small hole to drain water, but this is not a permanent solution. Replacing the glass unit requires special tools and skills. For a lasting repair, it is often safer to hire a professional who can ensure proper installation.
Will the moisture go away on its own?
No, the moisture will not disappear on its own. Once the seal is broken, humidity will keep entering the space between the panes. Without intervention, the fogging may worsen, and mold can grow. Taking action early is important to prevent further damage.
Does insurance cover window seal failure?
Policies vary, and your insurer decides what is covered. Seal failure is often considered a maintenance issue, so it may not be covered. However, if the moisture caused secondary damage like drywall rot, that might be covered. Check your policy and talk to your insurance company.