Double glazing windows are a great way to keep your home warm, cut down on noise, and save on energy bills. But like any part of your home, they can develop problems over time. Maybe they’ve started to fog up, the seals have failed, or the hinges aren’t working properly. The good news is that many of these issues can be fixed without having to replace the entire window. In this guide, we’ll take you through how to repair double glazing windows step by step.
Why Do Double Glazing Windows Need Repairs?
Double glazing windows are made up of two panes of glass with a gap between them. This gap is filled with air or gas (like argon) which helps with insulation. But over time, these windows can develop problems. Some of the most common issues include:
- Condensation Inside the Glass: If you see fog or water droplets between the two panes, it means the seal has failed.
- Broken or Damaged Seals: If the rubber seals around your windows are cracked or peeling, they won’t work as well.
- Stiff or Faulty Hinges: Windows that won’t open or close properly are often caused by damaged hinges.
- Cracked or Broken Glass: Accidents happen, and if one of the panes gets cracked, it needs to be fixed.
- Locks or Handles Not Working: If you can’t secure your window properly, that’s a security risk.
Understanding what’s wrong with your window is the first step to fixing it.
How to Fix Condensation Inside Double Glazing Windows
Condensation inside double glazing is a common problem, and it’s usually a sign that the seal has failed. When the seal around the window fails, moisture can get inside the gap between the two panes of glass. This not only looks unsightly, but it also means your window isn’t insulating properly.
Can You Fix Condensation Without Replacing the Window?
Yes, in some cases. If the problem is caught early, you can try a few things:
- Dehumidifiers: These can help reduce moisture in the air and may prevent condensation from getting worse.
- Window Repair Kits: Some companies sell kits that let you reseal the window yourself, but this is only a temporary fix.
- Professional Resealing: The most effective option is to have the window professionally resealed. A technician will remove the old seal, clean the inside of the glass, and apply a new seal.
- Glass Replacement: If the condensation is severe or the glass is damaged, you may need to replace the glass unit itself. This is cheaper than replacing the whole window.
How to Repair or Replace Window Seals
The seals around your double glazing windows are there to keep out drafts and moisture. Over time, these seals can become cracked, loose, or even come away completely. Replacing them can make a big difference.
How Do You Know If Your Window Seals Need Replacing?
- You can feel a draught coming in around the window.
- There are visible gaps between the seal and the window frame.
- The seal is cracked, peeling, or damaged.
How to Replace Window Seals
- Remove the Old Seal: Use a flat tool to carefully pry the old seal away from the window frame. Be careful not to damage the frame.
- Clean the Area: Make sure the surface is clean and dry before applying the new seal.
- Apply the New Seal: Cut the new seal to the right length and press it firmly into place. Make sure it’s a tight fit.
- Check for Gaps: Once the new seal is in place, check for any gaps. If you find any, press the seal firmly until it sticks.
How to Fix Stiff or Faulty Hinges on Double Glazing Windows
If your double glazing windows are hard to open, close, or lock, it’s often because the hinges are worn out or have become misaligned. Fortunately, this is something you can usually fix yourself.
What Causes Window Hinges to Stick?
- Rust or corrosion on the hinges.
- Dirt or debris caught in the hinge.
- Misaligned hinges due to regular use.
How to Repair Window Hinges
- Clean the Hinges: Start by cleaning the hinges with a damp cloth. Make sure to remove any dirt or debris.
- Lubricate the Hinges: Use a silicone-based spray or a light oil to lubricate the hinges. Avoid using anything too thick, like grease, as this can attract more dirt.
- Adjust the Hinges: If the window still isn’t closing properly, you may need to adjust the hinges. This usually means tightening or loosening the screws.
- Replace the Hinges if Needed: If the hinges are badly damaged or rusted, it may be best to replace them. Make sure you choose the right size and type of hinge for your window.
How to Fix or Replace a Broken Lock or Handle
A broken lock or handle on your double glazing window isn’t just annoying – it’s a security risk. The good news is that these parts can usually be replaced quite easily.
How to Replace a Window Handle
- Remove the Old Handle: Use a screwdriver to unscrew the old handle and remove it from the window.
- Fit the New Handle: Line up the new handle with the screw holes and secure it in place.
- Check the Lock: Make sure the handle works properly and that the lock is secure.
How to Replace a Window Lock
- Remove the Old Lock: Unscrew the old lock and take it off.
- Fit the New Lock: Line up the new lock with the holes and secure it with screws.
- Test the Lock: Make sure it works properly and that the window closes securely.
How to Replace a Cracked or Broken Pane of Glass
If one of the panes in your double glazing window is cracked, you’ll need to replace it. This is more complex than some of the other repairs, so you may want to call in a professional. But if you’re confident, you can do it yourself.
How to Replace the Glass in Double Glazing
- Remove the Window Beading: Use a flat tool to carefully remove the beading that holds the glass in place.
- Take Out the Broken Glass: Carefully lift out the broken glass. Wear gloves for safety.
- Measure and Order New Glass: Make sure you get the right size, and choose the right type of glass (double glazed, toughened, etc.).
- Fit the New Glass: Place the new glass in the frame and press it firmly into place.
- Replace the Beading: Press the beading back into place to hold the glass securely.
What If You’re Not Confident Doing the Repairs Yourself?
If you’re not comfortable doing these repairs yourself, that’s okay. There are plenty of professional window repair companies that can help. They have the tools and experience to fix your windows properly and safely.
When Should You Consider Replacing Your Double Glazing Windows Instead of Repairing Them?
In some cases, it may be more cost-effective to replace your double glazing windows instead of repairing them. Here are a few situations where replacement might be a better option:
- The Frames Are Damaged: If the window frames are warped, rotting, or badly damaged, replacing the whole window is often the best choice.
- The Windows Are Very Old: If your windows are over 20 years old, they may not be as energy-efficient as modern double glazing. Replacing them can save you money on your energy bills.
- Multiple Problems: If you have several issues – like failed seals, broken hinges, and cracked glass – replacing the window may be more affordable in the long run.
- You Want to Upgrade to Triple Glazing: If you’re looking for even better insulation, you may want to upgrade to triple glazing instead of sticking with double glazing.
How to Prevent Problems with Double Glazing Windows
Prevention is always better than a cure. To keep your double glazing windows in good condition, try these simple tips:
- Clean Them Regularly: This helps prevent dirt and debris from damaging the seals or hinges.
- Keep the Hinges Lubricated: A little bit of silicone spray can keep your windows opening and closing smoothly.
- Check the Seals: Look for any signs of wear or damage and replace them as needed.
- Deal with Problems Early: If you notice condensation, a draft, or a sticking hinge, sort it out straight away.
Final Thoughts
Double glazing windows are a great investment for your home, but they’re not maintenance-free. Over time, you may need to repair them to keep them working properly. But with the right tools and a bit of know-how, many repairs can be done yourself.
If you’re not comfortable handling the repairs, don’t hesitate to call in a professional. And if your windows are very old or badly damaged, it may be time to think about replacing them. The most important thing is to keep your home warm, secure, and energy-efficient.
