Repair Double Glazing: The Ugly The Truth About Repair Double Glazing

How to Repair Double Glazing

Double-glazed windows last a long time and secure but they will wear and tear over time. Double glazing that is in need of repair can be detected by the feeling of draught between the windows or condensation.

The seal that keeps the glass panes in place is usually damaged. This can be fixed with the reseal.


Seals are an essential component of double glazing, as they boost the energy efficiency and insulation of the windows. They are situated between the glass panes and uPVC frames they provide a vital airtight barrier which assists in keeping out rain, wind drafts, condensation, and drafts that can cause damp walls and windowsills. Window seals also help keep cold and warm air from each other, which can reduce heating costs.

It's not unusual for window seals to develop a problem. This is often due to weathering and exposure to extreme elements such as high winds rain, ice, and snow. It can also be caused by improper installation or the use of chemicals such as paint strippers which damage the rubber.

If the window seals fail, moisture and humidity can seep into the glass panes, causing fogging or misting. could affect the insulation properties of the double glazing as it no longer has the inert gas between the panes which assists in retaining heat.

If you know what to look for, it's possible to carry out some DIY double-glazed window seal repair. But, it's best to contact a professional window repair company to carry out the work. They can reseal windows in order to restore their energy efficiency and insulation qualities, and take out any unattractive condensation between the glass panes.

Double-glazed windows often come with a warranty that means they can be repaired or replaced at no cost to the homeowner. It's a good idea to check the warranty documentation that was supplied with your double-glazed window or contacting the company you bought it from to see if they can offer any assistance. It's also worth checking your home insurance policy to make sure that you're covered in case of any problems with double glazing. If you have insurance, it's worth ensuring that you make your claim promptly to avoid unnecessary expenses. You can also contact the Building Control Department of your local authority for information and assistance.


Double glazing isn't unbreakable and issues with it may arise. The most common issue is misting, which occurs when the seal between two panes breaks down and moisture collects. Fortunately, misted double glazing can be repaired without the expense of replacing the entire window. The process of repairing it involves removing the affected pane, blowing air into the gap to remove any lingering moisture and creating the new seal.

Double-glazed windows are constructed from a variety of glass. Some glass is clear like mirrors or safety glass, but it is tempered to ensure security and strength. Other types of glass are coated to enhance their properties. This could include solar control glass, which reduces glare and prevents heat transfer; extra clean glass that is stain-resistant and self-cleaning; and the chromogenic glass, which alters transparency based on temperature.

Double-glazed units that have high efficiency are also available from a few manufacturers. These units make use of special films and insulated glass to stabilize the internal temperature, so that cooling and heating systems do not need to be as laborious.

They are often an affordable alternative to replacement windows and offer excellent energy savings. These units should be maintained in a timely manner in order to preserve their effectiveness over time.

The most important thing is to contact the company you bought your double glazing from immediately you spot a problem. Contact them by phone, and then follow up by sending an email or a letter. This means you'll have evidence that you informed them about the problem and that you and the company agreed to address the issue. This is essential in order to be able to claim any guarantees you may have. Many businesses provide guarantees of 10 or 20 years, and some offer lifetime guarantees.


The frames that support the double glazing are constructed of materials like plastic and wood, which can be damaged in a variety of ways. Fragile frames can cause cold air to enter your home, which will increase your heating costs. Over time, frames may become warped and twisted. They might need to be replaced or at least cleaned and sanded down to restore them.

It is recommended to speak with a glazier if you are having issues with the frames on your windows. They have the necessary expertise and tools to fix this type of problem. You can make some repairs yourself, however it's generally faster and less expensive to seek professional advice. Employing a professional glazier to do the job will ensure that it is done properly and that you are able to claim any expenses back.

Condensation between glass panes is a typical sign that double glazing requires repair. This usually indicates that the seal has failed and is allowing air to flow between the panes. This can cause the humidity to fall, making your room feel draughty. This needs to be fixed as soon as you can to avoid further issues.

If the window is not cracked or broken it may not be required to replace it. In reality the frame itself may be in perfect condition, which is why it is more cost-effective to replace the glass unit inside the window.

Many companies offer same-day double glazing repair services, but it is important to know what you require before asking for the quote. It is not unusual for sales reps to attempt to convince people to buy more expensive repairs than they really need. It is important to understand what you require and what it will cost and the reason you'll need it to be able to identify a high-pressure sales strategy.

Double-glazing should be examined every couple of years to ensure they are in good working condition and to avoid problems. If you do need repairs it is best to get in touch with a reputable business for a quote as they will have the expertise and experience needed to resolve your issues quickly and efficiently.


A trustworthy tradesperson will install the lock on your window, whether you are installing new windows or repairing double glazing. Your installer should discuss different locking systems that are available in the estimate and what best suits your lifestyle and the local crime rate. A popular option is an Espagnolette system which has bolts with a mushroom head that are positioned behind locking points on the frame. They are usually installed into uPVC doors and windows but they can also be added to timber and aluminium.

Other locks are designed to limit the amount of opening windows. If you have a casement type window, consider installing a Canzak Window Restriction Cable that functions like a chain lock for doors and can be secured to either side of the moving part to stop it from opening too much. It is also easy to install and one of the only locks that work with casements.

A hinged wedge lock can be used to keep the lower window sash from being lifted enough to allow an intruder to gain access. Cut a strip of wood to the length of the channel that controls the lower sash. Fit it in, and tack it to the wall and frame.

You can also put in an sash or a casement lock. They are more durable than latch locks, and are frequently used in conjunction with them to secure windows. They are located on the side of a window and work on single and double hanging windows as well as sliding windows.

Other methods to increase the security of double-glazed windows is by installing a shoot bolt lock. This locks are created by bolts being shot from both ends to create a robust lock. They are usually offered as an upgrade and are suitable for commercial and domestic use.

It is also important to ensure that your double glazing installer is accredited by a reputable trade body, like Checkatrade, to ensure they have the knowledge and knowledge to complete high-quality work and comply with their standards.

Pub: 05 Dec 2023 12:17 UTC
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