How To Get Moisture Out Of Double Pane Windows

Frequently Asked Questions: Moisture in Double Pane Windows

Seeing condensation, fog, or even water droplets trapped between the panes of your double pane windows? You're not alone. This is a common problem that can be both unsightly and a sign of a bigger issue. Here's what you need to know about dealing with moisture in double pane windows:

Q: What causes moisture to get inside double pane windows?

The most common reason for moisture appearing between the panes of a double pane window is a failed seal. Double pane windows are designed with an airtight seal around the edges to create an insulating barrier. When this seal deteriorates due to age, weather exposure, or physical damage, it allows humid air to seep into the space between the panes. This humid air then condenses when it comes into contact with the cooler glass surface, resulting in the fog or moisture you see.

Age & Weathering: Over time, the sealant can become brittle and crack, especially under harsh sunlight or extreme temperature fluctuations.
Poor Installation: If the windows weren't installed correctly, the seal may never have been fully effective, leading to premature failure.
Physical Damage: Impacts from debris, accidental bumps, or even building settling can compromise the seal.

Q: Is moisture in my double pane window a serious problem?

Yes, while it might seem like just a cosmetic issue, moisture between the panes indicates a compromised window performance and can lead to further problems. Here's why it's important to address it:

Reduced Insulation: A failed seal eliminates the insulating properties of the double pane window, making your home less energy-efficient. This translates to higher heating and cooling bills.
Potential for Mold & Mildew: The trapped moisture creates an ideal environment for mold and mildew growth, which can be harmful to your health.
Glass Damage: In some cases, prolonged exposure to moisture can etch or damage the glass itself, leading to permanent discoloration or cloudiness.
Obstructed View: The condensation significantly obstructs your view, impacting the aesthetics of your home.

Q: Can I fix a foggy double pane window myself, or do I need a professional?

While there are some temporary DIY solutions, they are generally not long-lasting and may only address the cosmetic issue without fixing the underlying problem. A professional is usually required for a proper, permanent fix.

DIY Solutions (Temporary):

Drilling a Small Hole: Some homeowners attempt to drill a small hole in the window to allow the moisture to escape. This is a risky procedure as it can damage the glass and doesn't address the failed seal. Moreover, it's often only a temporary fix. We do not recommend this.
Using a Hair Dryer: Applying heat with a hair dryer might temporarily clear the condensation, but it won't fix the seal and the moisture will likely return.
Applying Desiccants: Some online tutorials suggest using desiccants (drying agents) to absorb the moisture. This involves drilling holes (again, risky) and inserting the desiccant. However, this is also a temporary solution and doesn't fix the underlying problem.

Professional Solutions (Recommended):

Window Repair: A professional can sometimes repair the seal without replacing the entire window. This usually involves removing the glass, cleaning it, applying a new sealant, and reassembling the window.
Glass Replacement: If the glass is damaged or the seal failure is too extensive, replacing only the glass unit (the insulated glass unit or IGU) is a more cost-effective option than replacing the entire window frame.
Window Replacement: If the window frame is also damaged or old, or if multiple windows are failing, replacing the entire window may be the best long-term solution.

When to call a professional: If you're unsure about how to proceed, or if you're uncomfortable working with glass or power tools, it's always best to consult with a qualified window repair or replacement professional. They can assess the damage and recommend the most appropriate and cost-effective solution.

Q: What are the pros and cons of repairing vs. replacing the window?

The decision to repair or replace a foggy double pane window depends on several factors, including the extent of the damage, the age of the window, and your budget.

Repairing (Seal Repair or Glass Replacement):

Pros:

Lower Cost: Generally less expensive than replacing the entire window.
Less Disruptive: Repairing a window is typically less disruptive than a full replacement.
Environmentally Friendly: Repairing reduces waste compared to replacing an entire window.

Cons:

May Not Be a Permanent Fix: If the window frame is old or damaged, the repair may not last as long as a replacement.
Limited Options: Repairing may not be possible if the glass is severely damaged or if the frame is compromised.
Matching Aesthetics: If you only repair one window, it might be difficult to perfectly match the aesthetics of the other windows.

Replacing (Entire Window):

Pros:

Long-Term Solution: Provides a completely new window with a new seal, ensuring a long-lasting solution.
Improved Energy Efficiency: New windows often have better insulation and energy-saving features.
Enhanced Aesthetics: Opportunity to upgrade the style and appearance of your windows.
Increased Home Value: New windows can increase the value of your home.

Cons:

Higher Cost: More expensive than repairing the window.
More Disruptive: Replacing a window involves more construction and potential disruption to your home.
Can Be Time-Consuming: The replacement process can take longer than a repair.

It's crucial to get quotes from both repair and replacement professionals to compare costs and understand the pros and cons of each option for your specific situation.

Q: How much does it cost to fix moisture in a double pane window?

The cost to fix moisture in a double pane window can vary widely depending on the method used, the size and type of window, and your location. Here's a general idea of what you can expect:

Seal Repair: Seal repair can range from $75 to $300 per window, depending on the complexity of the repair and the company you hire.
Glass Replacement (IGU): Replacing the glass unit typically costs between $200 and $800 per window. This is a good option if the seal has failed and the glass is damaged.
Window Replacement: Replacing the entire window can cost anywhere from $300 to $1,500 or more per window, depending on the window size, style, material (vinyl, wood, aluminum), and energy-efficiency rating.

These are just estimates, and it's essential to get quotes from multiple contractors to get an accurate price for your specific situation. Be sure to ask for a detailed breakdown of the costs involved, including labor, materials, and any disposal fees.

Q: How can I prevent moisture from forming in my double pane windows in the future?

While you can't completely eliminate the risk of seal failure, there are steps you can take to prolong the life of your double pane windows and minimize the chances of moisture problems:

Regular Inspections: Inspect your windows regularly for any signs of damage or deterioration, such as cracks in the sealant or condensation buildup.
Proper Maintenance: Keep your windows clean and free of debris. Clean the glass with a non-abrasive cleaner and periodically inspect and re-caulk the exterior of the window frames.
Protect from Direct Sunlight: Consider using window treatments like blinds or curtains to protect your windows from prolonged exposure to direct sunlight, which can damage the sealant.
Maintain Proper Humidity Levels: Ensure that the humidity levels inside your home are within a reasonable range. Use a dehumidifier in humid climates or during humid seasons.
Proper Ventilation: Ensure proper ventilation in your home, especially in bathrooms and kitchens, to reduce moisture buildup.
Professional Installation: When replacing windows, choose a reputable installer who uses high-quality materials and follows proper installation procedures. A poorly installed window is more likely to experience seal failure.

Q: Are there any long-term solutions besides repairing or replacing the windows?

While repairing or replacing the window is the most effective way to permanently resolve the issue of moisture between the panes, there are no other truly long-term solutions. As mentioned earlier, DIY methods are only temporary fixes and do not address the root cause of the problem – the failed seal.

Attempting to live with the foggy windows without addressing the underlying issue will only lead to further problems, such as reduced energy efficiency, potential mold growth, and eventual glass damage. Investing in a professional repair or replacement is the best way to ensure a long-lasting and effective solution.