Double-glazed windows are one of the best upgrades for modern homes. Known for their energy efficiency, soundproofing, and durability, they are designed to last for years. However, like any feature of a home, even the best double glazed windows can develop issues over time. From fogging and faulty seals to cracked glass or stiff mechanisms, problems can arise if not maintained properly.
In this blog, we’ll explore the common problems with double glazed windows, practical tips for fixing them, and when it’s best to call in professionals.
What Are Double Glazed Windows?
Double-glazed windows consist of two panes of glass separated by a gap, which is either filled with air or a special insulating gas. This design reduces heat transfer, keeping homes cool in summer and warm in winter. It also blocks external noise, making them a favorite for homeowners looking for comfort and efficiency.
Think of them as a thermal shield for your house helping you cut down on energy bills while making your home quieter and more comfortable.
Common Problems with Double Glazed Windows
Before you start thinking about fixing double glazed windows, it’s important to identify the issue. Here are the most common problems:
- Condensation Between the Panes – Indicates broken seals, allowing moisture inside.
- Cracked or Broken Glass – Weakens insulation and reduces safety.
- Faulty Seals – Causes air leaks and higher energy bills.
- Difficulty in Opening/Closing – Usually due to mechanism misalignment or dirt buildup.
- Fogging on the Inside – Suggests moisture issues or poor ventilation.
How to Fix Double Glazed Windows: Practical Solutions
1. Fixing Condensation Between the Panes
If you see mist or fog inside the glass, the seal is damaged. Unfortunately, this isn’t a simple DIY fix—you’ll likely need to replace the sealed unit. Professional installers can replace the glass without changing the entire frame, making it cost-effective.
2. Repairing Broken or Cracked Glass
Cracked glass reduces safety and efficiency. Depending on the damage, you may replace just the pane or the entire unit. Always act quickly, as cracks can spread.
3. Replacing Faulty Seals
Seals naturally wear down over time. Replacing them restores insulation and prevents drafts. Seal replacement is affordable and prolongs the life of your window.
4. Adjusting Stiff Mechanisms
Windows that don’t open smoothly often have misaligned hinges, damaged locks, or dirt buildup. Try cleaning and lubricating first. If the issue persists, a professional adjustment may be needed.
5. Upgrading Old Double Glazed Units
If your windows are over 15–20 years old, it may be more cost-effective to upgrade to modern, energy-efficient double glazed windows rather than repairing.
DIY vs. Professional Repairs
- DIY Fixes: Cleaning tracks, lubricating hinges, tightening screws.
- Professional Repairs: Seal replacements, cracked glass, condensation issues.
Hiring experts ensures the job is done safely and correctly. At FabFrame, we provide double glazing repair and replacement services to help homeowners maintain their investment.
Preventive Maintenance Tips
- Clean with mild soap and water (avoid harsh chemicals).
- Inspect seals regularly for wear and tear.
- Lubricate locks and hinges annually.
- Ventilate rooms to reduce condensation buildup.
Cost and Value Considerations
The cost of fixing double glazed windows depends on the type of repair:
- Seal replacement: Affordable and quick.
- Glass replacement: Higher cost but restores efficiency.
- Full unit replacement: Best for old or badly damaged windows.
Remember: Investing in repairs helps maintain energy efficiency and lowers long-term electricity costs.
Conclusion
Fixing double glazed windows isn’t just about solving a problem—it’s about protecting comfort, energy savings, and the lifespan of your home’s design. While minor issues can be managed at home, professional help ensures durability and safety.
At FabFrame, we go beyond being just a manufacturer—we’re one of the best double glazed window companies in India, trusted for high-quality, energy-efficient, and durable window solutions. With thousands of installations across India, we bring both expertise and customer trust to every project.
Contact FabFrame today to explore our uPVC and aluminium double glazed windows, designed to keep your home secure, quiet, and energy-efficient for years to come.