How to Deal With Double Glazed Repair

It's a good idea to have your double-glazed windows inspected regularly, especially if you notice the frames are expanding or contracting. This can reduce the possibility of draughts.

If you find condensation in between the panes, this is an indication that the seal is failing and needs to be replaced. Replacing the seal will not only reduce condensation but will also help to reduce the cost of energy.

Broken or cracked panes

Double glazing is not indestructible. It can develop faults that can reduce the efficiency of energy. Repairing double-glazing is an easy process, but you will require the proper tools and knowledge to do it properly. It is recommended to get a professional complete the task, rather than try to do it yourself.

The most common issue that occurs with double-glazed windows is a cracked or broken pane. A blow or knock from outside can cause this, as can an attempt to open a stuck-closed window. Glass can crack or break into pieces depending on its size and the force applied to break it.

If the double-glazed window is susceptible to cracking, it can be repaired with a type of putty or tape. repair double glazing will prevent the crack expanding or getting worse and will stop water, wind or any other elements from getting into your home through the cracks.

Condensation in double glazing is a different issue that is common and is often the result of a break of the window seal. It is a natural phenomenon that is caused by different temperatures and weather conditions, which is why it is important to check whether your windows are under warranty before attempting to fix them.

Typically, this will be covered by the company you bought your double glazing from, so it is important to contact them promptly and explain the issue clearly. It is best to do this in writing instead of by phone or text message, and always keep the copy of your correspondence.

If you're interested in trying to fix and repair a misted window yourself, a typical procedure is to drill through the middle of the affected window. A desiccant that is specially designed is put in to absorb any moisture, and this can help the condensation issue to heal itself. This is only a temporary fix and it is recommended that you replace your double-glazed units with new ones as soon as you can.

Misty Panes

If double-glazed windows begin fogging up, it can be a real pain and can cause significant disruption in your home. It is, however, fairly simple to fix the issue once you understand the root of the issue. In most cases the cause of the issue is a problem with the seals between your window panes that allow moisture to get in. Poor installation, drainage issues or even defective seals from the window manufacturer could cause this issue.

Standard sealed units consist of two glass panes, with an open spacer bar sandwiched between them (shown in the above image). The inside of the spacer bar is perforated, and the spacer bars are filled with desiccant to suck up any moisture. The two glass panes then are joined and the entire unit is filled with gas to improve its thermal efficiency.

As you can imagine if the seal fails, moisture can be trapped between the panes, causing condensation and mist. This will also lead to heat escaping your property which could result in an enormous amount of money squandered in energy costs.


Repairing a window that has been misted is a challenging task that should not be attempted by someone who doesn't have a solid understanding in the glazing and construction industries. If you are willing to take on the challenge, it's possible to repair the misted seal of a window by putting in moisture-absorbing desiccant into the space between the glass panels.

Be aware, however, that this is only temporary solution, and the condensation will likely to return and the process could need to be repeated. It's more efficient to replace misted glass units and it's much more hygienic and faster. Replacements will restore the original insulation to your property it is not possible through a repair. If you are experiencing misted windows or condensation, we recommend contacting a reputable company that offers double glazing. In the meantime, you can try to keep your windows as dry as they can by making sure they're properly ventilated and being cleaned regularly.

Water Leaks

Double-glazed windows shouldn't leak, no matter if they are new or old. Leaking windows aren't just an inconvenience, but can also cause serious damage to your home. This includes mold growth, structural damage, and the cost of heating and cooling. Contact a professional window company as soon as you notice a issue.

Window leaks are an indication that the seals between glass panes are not working correctly. If you notice condensation between the glass panes, it is a sign that the seal between the two panes has become weaker. Moisture is now flowing through the insulating space that is between the two panes. Although a small amount of condensation is normal, if it is persistent and becomes visible on the exterior or interior of your home it is time to have an repair service.

The accumulation of water at the bottom of your window frame is another common reason for leaks. This could be a sign of drain holes that are blocked or flashing that is not properly installed or a sloped sill. A clogged drainage hole is easy to fix by using a coat hanger wire to remove the gunk. Incorrect flashing is also easy to fix by using roofing caulk to fill the gaps around the frame. A misplaced pitch could be the cause of an inclined window sill to one side. A reputable window repair company will be able to determine the root of the problem and offer a fast, cost-effective solution.

While it is not uncommon for old UPVC windows to fail or leak, it is much more cost-effective and efficient to get a professional double-glazed repair service. They can restore your windows' appearance and functionality to what they were when they first were introduced. They can replace hinges, locks and handles if needed. Professional window repair companies will give you a guarantee on their work. You wouldn't get this if you were to fix the windows yourself.

The difficulty of opening

If you notice that your windows are becoming difficult to open, you must contact the company through which you purchased windows. In the majority of instances, a simple repair can fix the problem. If the problem persists it is possible to think about replacing your windows with more modern ones. Double-glazed windows with modern designs offer state-of-the-art features that will keep your home warm and secure, such as slimline uPVC or aluminium frames and advanced insulation to prevent the heat from escape, and innovative security equipment to stop intruders from entering your home.

Another common sign that your double glazing requires repairs is condensation between the panes of glass. This is due to a failure in the seals between the two panes. Inert gas is supposed to get into the glass and replace it with moist air, ensuring that your windows are well-insulated and thermally efficient. If this doesn't happen, the seals could have deteriorated over time due to changes in weather or other elements.

A draught emanating from your double-glazed window is also a common sign that the seals have failed, indicating that cold air is leaking into your home. This could also lead to more energy costs as your heating system will have to work harder to maintain the temperature of your home.

In certain cases the draught could be fixed by lubricating hinges, handles or mechanisms of windows or doors that are double-glazed. It is crucial to note that this is a temporary solution, and you'll have to seek out the experts in the event that the issue continues to persist.

You can also put in ventilation, such as extractors, air bricks, or vents in your doors and windows to alleviate the issue of condensation. It is also essential to allow double-glazed windows and doors to breathe by keeping them open as much as possible. This can be achieved with trickle vents.