energy efficiency

Ask Me Anything: 10 Responses To Your Questions About Repair Double Glazing

7 min read

How to Repair Double Glazing

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

Condensation or fogging between the panes usually means that the seal that holds the glass panes together has deteriorated. This can be repaired with a reseal.


The seals that are used in double glazing are a crucial part of the overall insulation and energy efficiency of the windows. Located between the glass panes and uPVC frames, they create an airtight seal that helps keep out wind, rain, drafts, and condensation that can lead to damp on windowsills and walls. Additionally, the window seals aid in keeping warm air in and cold air out which can significantly reduce heating costs.

It’s not unusual for window replacement near me seals develop a problem. This usually happens due to exposure to harsh weather conditions and elements like high winds, rain and snow. It can also be caused by improper installation or chemical substances like paint strippers which damage the rubber.

If the window seals fail, humidity and moisture can seep into the glass panes causing fogging or misting. Double glazing can lose its insulation properties when the inert gases that are between the panes are not present.

If you know what to look for, it’s possible to do some DIY double-glazed window seal repair. But, it’s better to call an expert window repair service to carry out the work. They can seal the windows to restore their insulating and energy efficient qualities and also eliminate any unsightly condensation that has accumulated between the glass panes.

Many double glazed windows are covered by a warranty which means they can be repaired or replaced without cost to the homeowner. It’s a good idea to check the warranty paperwork that was supplied with your double-glazed window or contact the company you purchased it from to find out if they can offer any assistance. Check your home insurance policy for coverage in the event of issues with double glazing. If you do have cover it’s important to make sure that your claim is made promptly so that you don’t incur unnecessary costs. You can also contact the Building Control Department of your local authority for more assistance and advice.


Double glazing can be a problem. The most common problem is misting, cheapest which occurs when the seal between two panes is broken and moisture accumulates. It is possible to fix misted double glazing without having to replace the entire window. The process of repairing it involves removing the damaged pane, blowing air into the gap to remove any moisture that remains, and then creating an entirely new seal.

Glass can be used to make double-glazed windows that come in various shapes and sizes. Some of the glass is plain like safety or mirrors, but it is tempered for durability and safety. Certain types of glass have coatings applied to enhance their properties. Solar control glass can be used to reduce glare and heat transfer. Extra clean glass is also stain-resistant and self-cleaning.

Some manufacturers also offer high-efficiency double-glazed units. These units use insulated glass and special films to maintain the internal temperature so that heating and cooling systems do not have to be as laborious.

These are often cheaper than replacing windows, and they can help you save a lot of energy. They must be maintained properly in order to preserve their effectiveness in time.

If you spot a problem, it is essential to contact the business which sold you the double glazing. Contact them via phone, and then follow up with a written letter or an email. This way, cheapest you’ll have proof that you’ve informed them about the problem and that you and them agreed to fix it. If you want to claim a warranty it is essential to do this. Many companies offer 10- or 20-year guarantees, and some offer lifetime warranties.


The frames that house the double glazing are made of materials like plastic and wood, which can be damaged in a variety of ways. Frames that are damaged can allow cold air to seep into your home which will increase the cost of heating. Frames can also get bent, twisted, and discolored over time. It could be necessary to replace them or at least sand down and re-paint them to bring them back to their original appearance.

It is best to contact an experienced glazier when you are having problems with the frames on your windows. They have the necessary expertise and tools to fix this kind of issue. You can do some repairs on your own, but it’s typically faster and less costly to seek professional advice. A qualified glazier who is trained to complete the work will ensure that it is done correctly and that you are able to claim any expenses back.

One of the most common signs that your double glazing needs repair is the appearance of condensation in between the glass panes. This usually indicates that the seal between the glass panes has broken, allowing air to enter. This can cause the moisture to drop and make your home feel humid. It is best to get this fixed as soon as possible to avoid any further issues.

It’s not always necessary to replace the whole window if it isn’t cracked or broken. In reality the frame itself may be in pristine condition so it would be more cost effective to simply replace the glass unit within the window.

Many companies will provide the same day repair service for double glazing, but it is important to understand what you require before asking for a quote. It is not uncommon for sales reps to attempt to convince people to buy more expensive repairs than they really need. It is best to understand what you require and how much it will cost and why you need it in order to spot a high-pressure sales technique.

It is recommended to have your double-glazing checked every few years to ensure that they are in good condition and to avoid problems. It is best to get an estimate from a reputable company when you are looking to repair your double glazing. They’ll have the knowledge and experience to fix your problem quickly.


A reputable tradesperson will install a lock on your window regardless of whether you are building new windows or repairing double glazing. The installer should go over the various locking options in the estimate and what best suits your living arrangements and the local crime rate. Espagnolette is a very popular choice that uses bolts with a mushroom head that engage behind the frame’s locking positions. They are commonly installed into uPVC doors and windows, but can be added to timber and aluminium.

Other locks are designed to limit the number of times windows can open. If you have a casement type window replacement near me, consider installing a Canzak Window Restriction Cable, that functions like an a chain lock for doors and can be secured to either side of the moving part to prevent it from opening too wide. It’s also easy to fit and is one of the few locks that can be used on casements.

A hinged wedge lock could be used to prevent the lower sash of windows that are sash from being lifted enough to allow an intruder into. Cut a length of wood to the width of the channel which operates the lower sash. Fit it into the frame, and then affix it to the frame and wall.

You could also add keys to your casement or sash window. They are more durable than latch locks and are typically coupled with them to help ensure the security of windows. They are located on the sides of a window. They are used on double and single hanging windows, as well sliding windows.

There are other ways to make double glazed windows more secure. One option is to add a shoot bolt locking system that includes bolts that are shot from both ends of the frame to create a sturdy lock. These are usually offered as an upgrade and are suitable for domestic and commercial use.

You should also check that your double glazing installer is accredited by a recognized trade body, like Checkatrade to ensure they have the knowledge and knowledge to complete top-quality work and meet their standards.

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