How to Repair Double Glazed Windows
Double glazing can lower energy costs by keeping your home warmer and reduce the need to heat. However, as time goes by these windows will need maintenance and repairs.
The most obvious signs of damage, like condensation between glass panes, can be repaired. A professional may be needed to repair more serious issues.
Condensation
Condensation is a common occurrence on all types of glass surfaces, but it can be particularly problematic when it appears on double-glazed windows. It can cause windows to cloud, and even lead to the growth of black mould on the window. This is not just unsightly but may also result in damage to the curtains and paintwork within the home.
This can be caused by a lack ventilation but it could also be because the temperature in the room is too cold. It could also be that the insulated unit is in a location facing south and direct sunlight is able to hit it all day. The inner pane can be warmer than the exterior and air is unable to traverse the gap. The condensation then forms on the cold surface of the pane's inner side and can be difficult to remove.
There are some ways to reduce the chances of condensation occurring in a home or business. A good ventilation system will allow the escape of warm air and balance humidity levels. Using extractor fans when showering, cooking and drying clothes indoors can also aid. It is also advisable to create areas of shade to prevent the inside of the home from becoming too hot and encouraging moisture to collect on windows.
If condensation does develop on the double glazed window it's usually due to the sealant breaking and needs to be repaired or replaced. A reputable company should be able offer this service at a reasonable price. This will ensure the efficiency of your home or building, and ensure that condensation doesn't damage the interior paintwork or surfaces.
Shattered Glass
Double-glazed windows are known for being durable and secure, but this doesn't mean that they're indestructible. It is not uncommon for double-glazed windows to break on their own. This could be alarming if the glass breaks into small shards. It could result from a variety of factors such as nickel sulphide inclusions or thermal stress.
It is essential to fix double-glazed windows that have cracks or broken seals as soon as you can. The window that is cracked could pose a health risk for your family and you. It can also affect the energy efficiency of your home and let water seep into the flooring, walls, and furniture.
The majority of double-glazed windows can be fixed with an easy repair by adding sealant or replacing the beading. If the glass is cracked or broken, it must be replaced. When removing the old pane of glass, make sure to wear gloves and have a secure disposal method prior to beginning.
To prevent the glass that has cracked from sliding out of the frame, you can tape it in place using masking or packing tape. This will stop it from slipping out of the frame and can be temporary until you get an alternative.
Gasket Seals
The window seals are a crucial component in double-pane windows, helping to block out moisture and air. Additionally, they aid in keeping warm air and reduce outside noises and allow you to enjoy quieter and more comfortable living spaces. However the window seals also deteriorate in time due to weather conditions and other environmental stresses. This could eventually result in visible black streaks on the exterior of your building as well as water-stained surfaces within your home. If you notice any issues with your windows, it is important to get a professional to look at them to determine the cause and make an effective repair.
Window seals are constructed from durable materials such as butyl or silicon, which maintain an airtight seal between glass panes. They are typically constructed with several layers to help withstand pressure changes and other environmental stressors. However, over time, these will weaken, resulting in an issue known as a blow seal. Blown seals happen when the airtight seal between the glass panes is broken, resulting in problems like fogging and decreased energy efficiency.
This can be resolved by replacing the gasket seal without having to purchase new double-glazing units. It is important to choose the correct gasket seal to fit your window frame and glass. Mr Misty has a wide selection of gasket seals extruded in a range of sizes such as E, bubble and wedge varieties that are easy to cut and fit to provide a long-lasting weatherproof option.
Some homeowners decide to seal windows themselves with a DIY kit. This can be risky, and it may not be a long-term solution. Re-sealing a double-pane windows is unlikely to restore the inert gases that were originally sealed in the IGU, so fogging and poor insulation are likely to recur after the sealant has failed.
Dropping
Double-glazed windows comprise two glass panes that have a space between them that is sealed and filled with by inert gases like Krypton, argon or krypton. This makes windows more energy efficient than windows made from a single glass pane.
The glass can be replaced in a double-glazed window, but if the frame has been damaged or rotted, it will likely need to be replaced. It can be expensive however it is essential to ensure that the window or door does not draft and will be safe to use.
Double glazing that is difficult to open or fails to stay in place can also be an indication that hinges, mechanisms and handles need to be replaced. window glazier oiling the mechanism or adjusting the screws can solve the issue. However, it's always recommended to contact your double glazing provider as soon as possible to have someone visit and conduct a test.

Discoloured uPVC frames could be an indication that it's time to think about replacing. UPVC is fairly durable but with time it may get worn out and become brittle if it's not protected from the sun.
Many DIY companies offer services to drill holes in misted double glazing to remove the condensation. It's an easy and inexpensive solution to this issue but it's important to remember that handling broken glass can be hazardous and it's best to leave this type repair to professionals. It's also worth noting that drilling holes in double-glazed windows can damage the integrity of the seals and glass which can cause problems with draughts or condensation or even leaks.
Warping
Double-glazing has many benefits, but it is important to be aware of any potential issues. When the glass or frames become warped this can be an indication that it's time to think about replacement options. This problem can be caused by a variety of reasons like the age of the windows and the humidity levels. It could be due to the way windows were initially installed or the cleaning product used.
Depending on the reason for warping, there are several ways to fix the problem. Some of these methods include tightening the hinges, or adding additional weatherstripping. However, this is only a short-term solution and it's normally better to seek out a professional.
Another common double-glazing repair problem is when the door or window becomes difficult to open and close. This could be due to dust and dirt build-up, or a warping of the sash. If the sash is warped, it will not fit well into the window's opening and may be difficult or even impossible to operate.
Double-glazing issues are easy to fix when you know what indicators to look out for. It is normal for these issues to occur as windows age but they shouldn't be ignored because they could affect the overall efficiency of your insulation. If you do detect problems, it's important to contact an expert to make the required repairs, as they'll be more cost-effective in the long term than replacing the entire unit. They will also offer a guarantee which you would not get if you carried out the work yourself.