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 requires repair can be detected by the feeling of draught in the panes of the window or condensation.
Condensation or fogging between the panes typically indicates that the seal that holds the glass panes together has been broken. Resealing is a solution to this.
Seals
The seals that are used in double glazing are a crucial part of the overall insulation and energy efficiency of the windows. They are situated between the glass panes of uPVC frames and provide an airtight seal which helps keep out rain and wind, drafts and condensation which can cause damp on walls and window sills. Additionally, window seals help keep warm air in and cold out which can significantly reduce heating costs.
It is not common for window seals to break down. This usually happens due to exposure to extreme weather conditions and harsh elements such as high winds snow and rain. However, it can also be due to improper installation or the use of chemicals, such as paint strippers that harm the rubber.
If the window seals are damaged, it can mean that humidity and moisture may seep through the glass panes, causing fogging or misting of windows. Double glazing can lose its insulating properties when the inert gasses between the panes are not present.
It's possible to carry out some DIY double-glazed window seal repair if you know what to look for. However, it's generally best to contact an expert window repair service to complete the task. They can seal the windows to restore their insulating and energy efficient qualities and also eliminate any unattractive condensation that has formed between the glass panes.
Many double glazed windows are covered by a warranty which means that they can be replaced or repaired at no cost to the homeowner. It's worth checking the paperwork that was supplied with your double-glazed window or contact the company you purchased it from to find out whether they can provide any assistance. Review your insurance policy for your home to see if you are covered in the event of problems with double glazing. If you're covered, it's important to make sure that you make your claim as soon as you can to avoid unnecessary expenses. You can also contact the Building Control Department of your local authority for more assistance and advice.
Glass
Double glazing isn't impervious to damage and problems may arise. The most frequent issue is misting. This happens when the seal cracks between two panes, and moisture is accumulated. Fortunately, misted double glazing can be fixed without the cost of replacing the entire window. The procedure for repairing it involves removing the affected pane, blowing air into the gap to remove any remaining moisture, and then forming the new seal.
Glass can be used to create double glazed windows in different sizes and shapes. Some of the glass is a plain type, similar to mirrors or safety, however it is tempered for durability and safety. Certain types of glass have coatings added to them to improve their properties. This can include solar control glass which reduces glare and prevents heat transfer; extra clean glass that is self-cleaning and stain-resistant; and chromogenic glass that changes transparency according to temperature.
Double-glazed units that have high efficiency are also available from certain manufacturers. These are made of insulated glass that has special films to ensure that the internal temperature stays stable, so heating and cooling systems do not have to be as efficient to maintain a comfortable temperature in your home.
These are often a more affordable option than replacing windows, and can help you save a lot of energy. These units should be maintained correctly, as they can lose their effectiveness as time passes.
As soon as you discover problems, it's essential to contact the business that you bought your double glazing. Contact them via phone, and then follow up with a written letter or an email. You'll have proof of contacting them of your concerns and agreeing to address the issue. This is vital if you want to claim any guarantees you may have. Many companies offer warranties of 10 or 20 years, and some provide lifetime assurances.
Frame
The frames that hold double glazing are made from materials like wood and plastic which are susceptible to being damaged by a variety different ways. Damaged frames may let cold air into your home, which could increase the cost of heating. Frames can also get bent, twisted, and discoloured over time. It is possible to replace them or at the very least paint them and sand them down to restore their appearance.
It is best to consult an experienced glazier when you are having problems with the frames on your windows. They have the expertise and tools to fix this kind of issue. You can make some repairs on your own, but it's generally faster and less expensive to seek out professional advice. A qualified glazier who is trained to finish the job will ensure that the work is done properly and that you can claim back any expenses.

Condensation between glass panes is a typical sign that double glazing requires repair. This usually indicates that the seal has failed and allows air to circulate between the panes. This can cause the humidity to fall, making your home feel humid. This issue should be addressed as soon as you can to avoid further issues.
It is not always necessary to replace the entire window if it hasn't been broken or cracked. In fact, the frame itself could be in excellent condition, so it's more cost effective to simply replace the glass unit within the window.
Many companies will provide a same-day service for double glazing repairs however, it is essential to know what you need before requesting a quote. Sales reps are known to try to get people to buy more expensive repairs than they actually need. It is crucial to know exactly what you are looking for, what you should pay and why. This will allow you to identify sales tactics that are high-pressure.
It is a good idea to have your double glazing examined every couple of years since this will keep them in good condition and avoid problems. If you require repairs, it is recommended to seek out a reputable company to get an estimate as they have the experience and knowledge required to resolve your problems quickly and effectively.
Locks
A trustworthy tradesperson will install a lock on your window regardless of whether you're installing new windows or fixing double glazing. As part of the quote the installer will discuss the various locking options available and choose the one that best fits your needs and local crime rate. A popular option is an Espagnolette system, which is comprised of mushroom headed bolts that engage behind locking points on the frame. They are usually fitted into uPVC windows and doors but can be added to timber and aluminium.
Other locks are made to limit the number of times opening windows. If you have a casement type window, think about installing a Canzak Window Restriction Cable which functions as an a chain lock for a door and can be secured to either side of the opening to stop it from opening too wide. It is also easy to install and one of the only locks that can be used with casements.
A wedge lock with hinges can be used to prevent the lower sash of sash windows from being lifted enough to allow an intruder to enter. Cut a length of wood to the width of the channel which operates the lower sash, fit it in, and tack it to the frame and wall.
You can also attach an unlocked lock that is keyed to your casement or sash window. They are more durable than latch locks and are usually coupled with them to help ensure the security of windows. These are located on the side of windows and can be used on both single and double-hung windows, as well as sliding ones.
There are other ways to make double-glazed windows more secure. One option is to add a shoot bolt locking system with bolts that are shot from both ends of the frame to create a robust lock. They are usually offered as an upgrade and are suitable for commercial and domestic use.
Make sure that the double-glazing contractor is accredited by an industry body like Checkatrade to ensure they have the expertise and experience required to carry out top-quality work in line with their standards.