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A Double Glazed Repair Success Story You'll Never Remember
How to Deal With Double Glazed Repair

It's a good idea to have your double-glazed windows checked regularly, especially if notice the frames are contracting or expanding. This will decrease the risk of drafts.

If you see condensation between the glass panes, the seal may be failing and should be replaced. Replacing the seal will not only reduce condensation but will also save on energy bills.

Cracked or broken Panes

Double glazing is not indestructible and there are a few issues that can affect the energy efficiency of the windows and doors. Repairing double-glazing can be an simple process, but you will require the right tools and experience to do it properly. It is generally recommended to hire a professional to perform the work rather than try to do it yourself.


The most frequent issue that affects a double-glazed window is a broken or cracked pane. This can be a result of a knock or blow to the frame from outside or a failed attempt to open a window that is stuck closed. The glass might break or crack into small pieces, depending on the size of the crack and the force applied to it.

If a double-glazed window is prone to cracking it can be repaired by using a specific type of putty or tape. This will stop the crack from growing or becoming worse, and also stop wind, water or other elements from getting into your home through the cracks.

Another problem that is frequently encountered is condensation in double glazing. This is usually the result of a broken window seal. It is a common occurrence that is caused by temperature and weather changes. Before attempting to repair your windows, you should see if they are still covered by the warranty.

Typically, this will be covered by the company you purchased your double glazing from, so it is crucial to contact them promptly and clearly explain the issue. This is best written down instead of by text or phone. Always keep the original.

If you want to try and fix a damaged or misted window by yourself, a popular method involves drilling an opening in the centre of the damaged pane. A special desiccant is then placed in the hole to absorb any moisture, and this will help the condensation issue to get rid of itself. This is a temporary solution and it is recommended that you replace your double-glazed units with new ones as soon as you can.

Misted Panes

When double-glazed windows start getting misty, it can be a major pain and can cause significant disruptions to your home. Fortunately, it can be fairly simple to fix the issue after you have figured out what's causing it. Most of the time, the root of the problem is a problem with the seals between your window panes, allowing moisture to enter. This could be due to poor installation, drainage issues or even seals that are defective from the window manufacturer.

Standard sealed units comprise of two glass panes that have a hollow spacer bar inserted between them (shown in the above image). The inner surface of the spacer bar is perforated, and the spacer bars have been filled with desiccant to suck up any moisture. The two glass panes will be sealed and the whole unit will be filled with gas to increase its thermal efficiency.

As you can imagine if the seal is damaged, moisture may be trapped between the panes, causing condensation and mist. This can also result in heat escaping from your property, which could result in a substantial amount of money lost on energy bills.

Unfortunately, fixing a misted double glazing window can be a little tricky and isn't something that should be attempted by anyone who doesn't have an extensive understanding of the glazing industry and construction industry. If you are willing to take on the challenge, it's possible to fix a sealed window that has been misted by adding moisture-absorbing desiccant to the space between the glass panels.

Remember that this is only a temporary fix, and the condensation might return. The process will have to be repeated. It's far more effective to replace misted glass units and it will also be much cleaner and quicker. A replacement will restore the original insulation to your home, which is not possible through a repair. If you are experiencing misted windows and condensation, we suggest contacting an experienced company that can provide double glazing. In the meantime, try to keep your windows as dry as they can by ensuring that they are properly ventilated and being cleaned regularly.

Water Leaks

Whether they are new or old, double-glazed windows should not leak. Leaking double glazing window repair aren't just an inconvenience, but they can also cause serious damage to your home. This includes mold growth and structural damage as well as the cost of heating and cooling. Contact a professional window company as soon you suspect a issue.

Window leaks could be a sign that the seals between glass panes aren't functioning properly. If you notice condensation between the panes, it's a sure sign that your window seal has become damaged and water is leaking into the insulating gap between the glass. While a little condensation is normal, if it persists and is visible on the outside or inside of your house, it's time to have an repair service.

Another reason for leaks is the accumulation of water at the bottom of the frame of your window. This can be a sign of drainage holes that are blocked or flashing that is not properly installed or an unbalanced sill. A drainage hole that is blocked can be easily fixed by using a coat hanger wire to remove the gunk. Improper flashing is also easy to fix using roofing caulk to fill in the gaps around the frame. If the window sill slopes to one side, it could be due to an improper pitch. A professional window repair service will identify the cause of the problem and provide an affordable, fast solution.

While it is not uncommon for old UPVC windows to leak or break but it is more cost-effective and efficient to get a professional double glazed repair service. They can bring back the appearance and function of your windows to how they were when they were new. They can also replace hinges, handles and locks if required. Professional window repair companies will give you a guarantee on their work. You wouldn't get this if you were to repair windows yourself.

Difficulty to Open

If you find that your windows are becoming harder to open, call the company from which you purchased them. In most cases, a simple fix will resolve the issue. If the problem continues, you should consider replacing your windows with new contemporary designs. Double-glazed windows with modern designs offer the latest features to keep your home safe and warm. They include slimline uPVC frames or aluminium frames that have advanced insulation that stops heat from escape and cutting-edge security equipment.

Condensation between glass panes is another sign that double glazing requires repair. This is caused by an issue with the seals which separate the two panes. Inert gases are designed to escape between the two panes of glass and replaced by humid air. This will keep your windows in a breathable state and be energy efficient. If this isn't the case, the seals could have been damaged over time due to weather changes or other factors.

A draft from a double-glazed window can also be a sign that the seals aren't working, which means that cold air is coming in to your home. This could also lead to more energy costs as your heating system will need to work more to maintain the temperature of your home.

In some cases a draught may be resolved by lubricating handles, hinges or mechanisms on double-glazed doors or windows. It is crucial to note that this is only a temporary solution, and you'll be required to consult with a professional when the issue persists.

You can also put in ventilation devices, like air bricks, extractors or vents in your windows and doors to alleviate condensation issues. It is also important to allow your double-glazed windows and doors to breathe by keeping them open to the maximum extent possible, which is possible with trickle vents.

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