How to Repair Double Glazing Windows

If you have double glazing it is possible that you will encounter issues with gaskets, hinges, and handles. You can often solve these issues without replacing the entire window, which saves money and time.

Condensation can form in the space between the two panes. This usually indicates that the window has become defective and requires attention.

1. Broken Panes

A damaged double pane glass could expose your home to the elements. However, it's not always necessary to replace the entire window sash in order to resolve this problem. In fact double pane windows are typically repaired by the use of a specific adhesive that is put inside the cracks to stop them from worsening.

This repair method is often used to prevent superficial cracks (such as stress cracks) from deteriorating further, which can occur when temperature changes cause your glass to expand and contract. Alternatively, if your glass has cracked or cracked, it might be necessary to completely remove the broken window and replace it.

The seals between the two panes of glass can wear away or become damaged, causing misting and condensation on the windows. These issues are usually caused by moisture trapped between the glass panes or that seeps into the wall through the window frame. Moisture is a problem for double-glazed windows, regardless of the source. It can cause mold and water damage which is expensive to fix.

You can attempt to fix the issue by wiping the windows of your double-glazed windows with cold, cool water. This can temporarily solve the issue, especially if it is hot and humid outside. You can also try using a dehumidifier inside the room where your double glazed windows are located that can be especially useful during the summer.

If the issue continues, the double glazing expert can come to your home and clean the space between the panes of glass. A tool can be used to draw a score line around the perimeter of the windows, where you can cut the glass with a glass cutter. After this is completed then you must remove all the glazing points and putty from the frame of your window opening. This should be done with the sash still in place, however it's easier to work on a flat surface, such as a table.

2. Seals

The window seal is an essential element of double glazing. It assists in keeping your home secure and energy efficient, as well as draught free. The seal spans the inner perimeter of the uPVC frame and holds an air-tight seal over the gas-filled space between the two panes of glass in the window. This is a crucial component of the insulation your double glazing delivers and any issues or failure to the seals will greatly diminish the benefits.


If your seals aren't doing their job, you'll notice condensation appearing between the panes. It's not just ugly but it can also cause mould and damp in your home. It can cause damage to flooring, furniture, walls and create serious health issues for those suffering from respiratory ailments such as asthma.

Most double glazing manufacturers offer a service that allows you to repair your windows without the need to replace the entire unit. This is not only cheaper but also faster and more environmentally-friendly. There are also DIY alternatives, like caulking for leaks and moisture intrusion or self-adhesive seals that are applied directly at the junction of the window sash and the frame.

In the majority of cases, the simplest and most effective way to deal with damaged window seals is to call in an expert. They can repair the window seal, and also prevent air and moisture from getting into your home, which could cause costly damage.

It is worth looking over the documentation of your double glazing to find out whether it comes with an assurance period of 10 to 20 years is common - this could save you money in the event that the windows have to be replaced due to broken seals. Some installers will even drill misted double glazing and draw out the moisture in order to create a new seal and prevent it from misting in the future. This is only temporary, and a plug must be installed to seal the hole.

3. Locking Mechanisms

Double-glazed windows utilize air gaps between the glass panes to provide insulation against temperature fluctuations outside and to maintain warm inside the house. double glazing window repairs of window could also be called an insulated unit (IGU). They can give you a lot of energy efficiency, which can lower your heating bills. They are not impervious to damage and could require repairs to double glazing.

Luckily, most of these are relatively easy to fix and much cheaper than replacing the entire window. It is best to contact a specialist company who offer double glazing repair services, so that you can be sure that the repair is done efficiently and with minimum hassle. They will usually provide a free estimate so that you can evaluate the costs and the quality of their work.

Examine the warranty that came along with your double-glazed window. It usually covers the costs of repairing. This is a typical feature of all double glazing installations and is typically for 10 or 20 years however some companies offer lifetime guarantees.

The seal may be blown when you can't open your double-glazed window, or if you notice there appears to be a misty area between the panes. This could occur if the frame of the window moves slightly, or if the container that holds the glass sheets in place deteriorates with time.

There are a variety of ways you can fix windows with double glazing by yourself, but it's usually much more efficient to work with an expert company. You should always adhere to the guidelines of the manufacturer and employ the right tools. It is important to keep in your mind that if you try to remove the glass yourself then you'll lose any guarantee that you might have and may end up with a bigger bill than if you had simply contacted the company from whom you bought your windows.

Once the broken pane is removed you can replace it with plastic spacers, making sure that it fits the frame. You can also add any uPVC beading. You can then fit the gasket with a new seal and secure the window.

4. Weatherproofing

If your double-glazed windows are difficult to open or have sagged, there are ways of fixing them. Oil the handles, hinges, or mechanisms to see if it helps. You can also replace gaskets to boost your windows' performance and prevent them from let in cold air and drafts. They can be found in a hardware store or online. They are easy to install. If you aren't able to do it yourself, you could always have a professional install it for you.

Condensation between windows is another problem which can be easily solved. It usually happens due to an unsound seal, which will allow moisture to enter the gap between the glass panes. This could cause the glass to mist up, which is unsightly and ineffective.

Anyone with a bit of DIY knowledge can easily replace the gaskets. It is crucial to make sure that you use a gasket sealer, which will provide a good seal and help to reduce energy bills. Alternatively, you can use a calk for filling any gaps and give your windows an extra boost in their weatherproofing.

The seals could also fail on double-glazed windows. This is often caused by painting near the windows or by renovation work done on the property, or general wear and tear. It is crucial to repair your double-glazed windows as soon as they become misted.

Double-glazed windows are a great addition to any home. They provide you with energy-efficient and safe windows which keep the heat in and the weather outside. However, there are instances when it is better to replace your double glazed windows instead of repairing them. This could be the case with frames that have broken panes or panes that are not suitable for double glazing.