No matter how new your double glazing is, it's not indestructible. It is susceptible to failure and you must have it repaired as soon as it does.
Double glazed windows that mist are a sign of a failure. It indicates that the seal between the two panes of glass has started to leak, which means your window will no longer be as efficient in insulating.
Damaged Seals
If a window seal fails, moisture can be able to get in between the glass panes and cause condensation or fogging. This can affect how well the windows insulate, and could result in higher energy bills as you will need to make use of more cooling or heating. Foggy windows also make it difficult to enjoy the outdoor view and can detract from the overall aesthetics of your home.
If you notice that your double-glazing has any of these issues It is essential that you contact an expert who can fix or replace the seals. In doing this you can save money and increase the comfort and efficiency of your home.
A damaged window seal can increase the amount of humidity in your home, which leads to the formation of black mould and other problems which pose health risks. The moisture can also harm the frames of your windows, and cause them to rot or warping. Regularly cleaning your windows will help prevent this.
Double glazing was invented to reduce the cost of energy for homeowners by insulating their homes. Insulated glass is two panes of glass that are bonded with spacers and filled with inert gases like the xenon or argon, to decrease heat transfer. When a window seal fails, all of the insulating gas is released, which makes the windows less effective at conserving energy.
A faulty window seal can lead to many problems such as a decrease in energy efficiency, water leaks and a decrease in security. It is crucial to replace seals as soon they're damaged to avoid these problems. A glazier can replace the seals quickly, effectively and efficiently to ensure that your double-glazing remains in good working order.
Some windows with glazed glass come with a guarantee that will cover the cost of replacing the window seals in the event they are damaged. Ask your glazier find out what their policy is regarding this, and also how long the warranty lasts. If you are covered by a warranty, it is recommended to contact them as soon as possible when you begin to detect any indications of a faulty window seal.
Panes that are damaged Panes
If your double glazing begins to fog up or appear to be misting it's a sign that the seal between the two panes of glass has failed. This could be due to a variety of factors. Some of the most common causes are:
A damaged windowpane seal It can be due to accidental damage or gradual wear and tear. In most cases, it can be repaired by simply replacing the damaged glass pane.
Poor installation - If the double glazing is installed improperly, it can cause immediate problems. This is particularly true if the installers used the wrong sealant. If you notice this, it's recommended to speak with the company that you purchased your windows from as soon as possible.
Extreme temperatures - whether cold or hot they can both impact the durability of double-glazing. This can also cause the frames to expand or shrink and cause issues opening and closing them smoothly.
double glazing repairs or water in the frame is a common problem that can be caused by a defective window seal. It is essential to fix this in the shortest time possible because it could cause serious damage to the glass and woodwork of your home.
This is the most obvious indicator that your double glazing is failing. This is due to condensation between the windowpanes. The glass will lose its thermal efficiency if they are unable to hold heat.
This can be expensive. Fortunately, we have a solution to this issue - our industry-leading resealing service.
A window that has been damaged should be fixed immediately you spot it, as it can cause major problems in the energy efficiency of your home. It also poses security risks, as a faulty double glazing window will not be able to prevent burglars from getting into your home. We recommend you contact the company from which you bought your double glazing from as soon as you notice a fault, and ask them to send a technician out to assist.
Condensation on the Panes

If you're seeing a haze or condensation between the panes of your double-glazed windows it's an indication that the seal has failed and the gas that insulates inside the sealed unit has evaporated. This is a major issue, and it indicates that your windows no longer offer the same thermal performance that they once did.
However, it is also possible to see condensation on the inside of double-glazed windows if you are drying clothes in a room that has low ventilation and damp conditions. This type of condensation usually occurs at night, as the glass is cooler. It will disappear in the morning, as the sun comes up. This is a normal occurrence and is not indicative of any issues with the glass or your windows itself.
The outside of your double-glazed windows could condensate or fog up due to lack of ventilation, damp conditions or even the use of certain cleaning products containing harsh chemicals. These products can damage the seals which keep moisture from the insulating gap between the panes. If you are experiencing this issue it is recommended that you have an expert replace the seal to restore the insulation qualities of your windows.
Depending on the condition of your frames, you may not need to have the entire window replaced and replacing only the glass units will help you save money. By keeping your home well-ventilated and the humidity as low as you can, you'll lower the chance of condensation. For instance, when bathing or showering, you should always use the extractor fan and open a window to prevent excess moisture from building up. It is also recommended to cover your pots and pans when cooking or by using a dehumidifier inside the room where condensation is common.
If you encounter this issue it is recommended to contact an expert double glazing company that can repair the damaged seals and replace damaged glass units. A FENSA approved professional will accomplish this fast and efficiently, ensuring that you can get your new double glazed windows as soon as possible.
Leakage
It is important to repair your windows immediately if they're leaking. It's not only unsightly, but it's also a sign that the windows aren't being sealed and insulated properly. This is a major problem for homeowners as it can mean they're losing efficiency in energy use which can result in higher costs to heat their homes.
The misting of your double glazing is due to the temperature difference between the glass panes, and the outside air. This results in the accumulation of moisture inside the window which then leads to a gap forming between the panes. This is often referred to as a "blown" window.
Replacing a window that has been damaged will restore the energy efficiency of your home, and will save you money. A new unit will seal the gap correctly, stopping cold air from entering your home and warm air from leaving it, ensuring that your heating remains exactly where it should be.
Another issue that is common to double glazed windows is that the frames can become difficult to open and close. This is often caused by extreme weather conditions such as high temperatures. The frames can be cleaned using cold water to address the issue. The frame will then shrink and make it easier to open or close the window.
You can also repair this yourself by sanding and scraping the rabbets that will fit into the window into the frame until they are naked wood, and then painting over them with an external primer. Putty can be used to fill the gaps where the rabbets used to be, but being careful not to create a smooth surface as you want the putty to adhere and be as sturdy as possible.
Talk to the installers of your double-glazed window door to get advice on how to fix the issue. If the windows are still under warranty, the company may be able to repair the windows at their own cost. If not, you should contact an established company that offers double glazing repair services like Mr Misty Ipswich and see what they can do.