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7 Small Changes That Will Make The Difference With Your Double Glazed Window Misted
Why is My Double Glazed Window Misted?

Double glazing is an excellent method to boost the efficiency of your home and ensure maximum energy efficiency. However, if you notice your windows leaking, it is a sign of a broken window seal.

Repair My Windows And Doors allows moisture into the insulation portion of your windows and cause a drastic decrease in performance. Luckily, this issue is quite easy to resolve.

What is it?

There may be condensation on the outside of your double glazed windows at times especially when it's cold and windy. This is a typical indication that your double-glazed windows are securing the cold and let in warmth. It can easily be wiped away, or let it go away on its own.

If your double-glazed window is leaking on the inside though, this is a more serious issue. This is an indication of a damaged seal or malfunction in your double glazing. If a double-glazed sealed unit breaks down or fails, water can get in between the two panes of glass that make up your window. The argon, xenon and krypton gasses that are used in these units can also leak out. Once this happens, the high density gases lose their insulation properties and your windows are not sealed anymore.

Natural wear and tear is one of the primary reasons for seals to fail on windows. This is due to the constant expansion and contraction of gasses inside your double glazed windows as temperatures change. Utilizing chemical cleaners that contain abrasives on your double glazed windows can also cause damage to the seal, and cause it to break in time.

If the seal on your double-glazed windows is broken this means warm air can escape between the glass panes and cool air could enter which causes moisture to build up on the spacer bar inside the glass unit. This is known as a "blown" window and could result in costly energy bills in winter.

Replacing the glass units of your double-glazed windows could solve this issue. This is a cheaper solution than replacing the entire window and it can ensure that your home is properly protected and insulated. It's also a good idea to ensure that the company you choose to replace your double glazed windows is insured properly, because this can safeguard you in the event of any unforeseen issues regarding the installation.

Why is this happening?

Condensation inside double glazing isn't only unsightly but can also result in mildew which will deteriorate timber window frames. In extreme cases, black mold can also grow on window frames and cills which isn't good for you or your family members.

It is essential to know the reason for condensation in order to get to grips with the best way to handle it. Condensation occurs when the temperature of the glass falls below the dew point - the point at which water vapour in the air becomes liquid water. This is the reason it is most likely to occur during the night or early in the morning, when the dew point is at its highest and the air outside is warmer than the glass surface temperature.

Condensation within double-glazed windows is likely to be more common as the weather becomes colder and humidity levels rise. It is usually a natural phenomenon and does not necessarily mean that your double glazing is in problems. If the condensation is visible on the outside of your window and disappears once the sun rises, then there is no need to be concerned about it.

Faulty or damaged double glazed windows aren't able to insulate your home as well as they should and this could result in higher energy bills. If the seals have been broken, moisture could be able to get into the panes and cause the windows to mist.

There are many causes of misted double glazing, but there are some that are essential to think about.

When you notice condensation on the inside of your window, it is usually the first sign that something is wrong. The next stage will be when you begin to observe water stained or damaged glass that could be caused by trapped moisture between the two panes of glass. This could be due to damage caused during installation or just gradual wear and tear as time passes. In some instances this will be a sign that the window has reached the end of its life and needs replacing to improve the insulation efficiency of your home.

How can I get rid of this?

Double glazing can increase the energy efficiency of your house and also enhance the appearance of your windows. If your double glazing is cloudy or misty, it can ruin the appearance of your windows. The solution is easy and affordable. Double glazing that is misted is caused by condensation and moisture getting into the space between the panes of your double-glazed window that should be sealed with airtight. This is usually a sign that your window seal is damaged and needs to be replaced.

It is normal for newly installed double-glazed windows to show condensation on the outside, particularly in cold weather. The glass is cooled by air that has reached its dewpoint. When this water vapour hits the cold surface of your windows it is visible and disappears once the glass warms up again.

It is only when the double-glazed windows inside mist that you need to do something about it. The condensation is a sign that the seal between your two glass panes is damaged. It can also be a sign of poor installation or chemicals in cleaning products.

To get rid of condensation on your double glazed windows, there are a variety of methods you can try. You can wipe them with a damp cloth to get rid of the condensation. You can spray them with a glass cleaner that is designed to remove the haze that is caused by condensation. You can also install a dehumidifier at home, this will help to absorb moisture and stop it from accumulating on windows.

Professional measures can be taken to repair double-glazed mist. This involves drilling a hole in one of the windows, and then pumping a desiccant through the window. This will aid in drying out the glass and avoid further problems. This is an extremely risky process and should only by done by an expert. This procedure will restore the double-glazed windows back to their original condition and will ensure that you don't face any misting or condensation issues in the near future.

What is the best solution?

It is normal for double glazed windows to have condensation on the outside of the glass panes. This is a sign windows are functioning properly and can be easily removed. The condensation is caused by the difference in temperature between the air inside the house and the cold surface of the window glass.

However, if there is condensation between the panes of glass that make up your double-glazed windows, this is not normal and must be dealt with immediately. The window seal has been damaged and water can get into the gap between the glass panes. This can result in windows losing their insulation properties, which can impact the energy efficiency of your home.


The most efficient way to minimize condensation in your double glazed windows is to increase the ventilation inside your home. Open your windows daily to let fresh air enter your home and decrease humidity. In areas that have a lot humidity, such as kitchens and bathrooms extractor fans are recommended. Dehumidifiers are also useful for actively eliminating excess moisture from the air and stopping it from condensing on cold surfaces, like windows.

Another effective solution for reducing condensation in double-glazed windows is to clean the glass with an anti-fogging item. These products are readily available in most hardware stores and are designed to prevent the build-up of moisture. It is important to remember that these solutions aren't permanent and will need to be reapplied periodically.

If your double-glazed windows are still covered by warranty, the most effective way to solve any issue with misting is to contact an experienced installer. It is best to use an FENSA certified company as they will provide a 10 year guarantee and will abide by UK Building Regulations.

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