As double-pane windows age, moisture can breach the seal and condense between the layers of glass. When this happens, you can’t replace the seal, so your best option is to remove and replace the glass.
Keep reading for more information on how to remove moisture from double-pane windows, and watch our video on How to Replace Insulated Double-Pane Glass Windows for more details.
Causes of Moisture Buildup
Moisture buildup between your double-pane windows occurs when the seal between the two panes of glass fails. A loose seal allows outside air and moisture to enter the space between the panes and condense on the interior surfaces of the glass.
Signs of Moisture
Trapped moisture between your double panes can cause fogging, frosting, and condensation that obscures visibility. Bubbles in the sealant material and gaps or cracks are also signs of moisture. It’s important to hire a professional to repair this before it leads to window damage.
Once moisture builds up between your sealed double pane units, the damage usually can’t be reversed or repaired. In order to solve the issue, you’ll need to replace the windows.
How To Remove Moisture From Double-Pane Windows
Homeowners have various options when it comes to window replacement.
- Replace the insulated glass unit with new panels and sealant. In my experience, this is the most effective and economical solution.
- Replace the entire window sash if the frame is also deteriorated.
- Install completely new replacement windows for improved performance.
Online guides may share DIY tips to drill holes in the glass, but this won’t provide a permanent fix for you. The underlying seal failure allows ongoing moisture intrusion over time and needs to be addressed to resolve the issue.
DIY Vs. Professional Window Replacement
Removing and replacing glass or window sashes is an advanced project requiring specialty tools, safety measures, and expertise.
The process usually runs like this:
- Carefully extract the glass or sashes without damage.
- Thoroughly clean out old sealant residues.
- Apply new sealant properly without gaps.
- Securely install the replacement panes or sashes.
- Ensure airtight seals to prevent moisture.
Most homeowners are better off hiring a professional window installer to complete the job effectively and avoid liability risks from DIY mistakes. Usually, an experienced professional tackling your project comes with the benefit of a labor warranty, giving you further protection.
Window Replacement Costs
Expect to pay $200 to $600 per window to replace just the glass panels, with simple sliders on the low end and larger windows costing more.
New window installation costs can range from $300 to $1,500 per window. I recommend collecting at least three estimates from local professionals for your project to get a precise idea of what it will cost you. A professional can also help you choose the right windows, giving you greater peace of mind.
So, Is Removing Moisture from Double-Pane Windows Worthwhile?
The only permanent fix for moisture buildup between your panes is replacing foggy double-pane glass or sashes. Despite being pricey, new insulated units will restore visibility, reduce energy loss, and prevent ongoing condensation damage to your window frames. Given the benefits, window replacement is usually a smart investment to extend your window life and improve your home’s value.
FAQs About Moisture in Double Pane Windows
What causes moisture between the panes?
A loose seal or seal failure almost always causes moisture between window panes. Seals fail from age, defects, temperature swings, impacts, or warping, allowing outside air and moisture to enter the space between window panes.
What are the signs I need window repairs?
Some common signs of moisture trapped between windows include fogginess, condensation, bubbles in the sealant, visible seal cracks or gaps, and trapped dirt. Call a window professional to examine your windows immediately if you notice these signs.
Can I drill holes in the glass to fix it?
No, holes don’t address the root seal failure, which allows moisture to enter your windows. A professional must replace the window glass or sashes to solve condensation problems.
Should I DIY or hire a professional for window replacement?
Most homeowners are better off hiring a professional to avoid complex work and liability risks from mistakes during the installation process. Unless you have extensive knowledge and experience installing windows, you’ll be better off with a professional who can give you peace of mind and a labor warranty for added protection.
How much does glass replacement cost?
Expect to pay $200 to $600 per window to replace the glass panels. New window installation typically ranges from $300 to $1,500 per window.
