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Why is My Double Glazed Window Misted? Double glazing is a great way to increase the efficiency of your property and secure optimal energy efficiency. If you notice that your windows are getting misty, this is an indication that the seal on your window is broken. This can allow moisture to enter the insulation area of your window, which could drastically decrease the performance of your windows. 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 indication that your double-glazed windows are blocking out the cold, but let in heat. It can easily be wiped away, or you can let it be cleared by itself. If your double-glazed window mists on the inside this is more of an issue. This is typically a sign that the seal on your double glazing has failed, or 'failed' as it is referred to in the industry. When a sealed double glazed unit breaks down or fails, moisture can get inside the two glass panes of your window. The argon, xenon and krypton gasses that are used in these units may also escape. When this happens the high-density gasses lose their insulation properties and your window ceases to function as an enclosed unit. One of the main reasons for a window's seal to break down is natural wear and tear over the years. The constant expansion and contraction of your double-glazed windows is caused by changes in temperature. Double glazing seals can be damaged by applying abrasive chemicals to them. If the seal on the double-glazed windows you have is broken warm air can escape through the glass panes and cool air can get in, causing moisture buildup on the bars that hold the glass unit. This is often called a blown window' and could result in expensive energy bills in winter. This issue can be addressed by replacing the glass units in your double-glazed windows. This is a more cost-effective option than replacing the entire window. It can also ensure that your home is properly sealed and insulated. You should also ensure whether the company that is replacing your double-glazed windows is insured. This will protect you in case of any unexpected issues. What is the reason for this? Condensation in double glazing can cause mildew to develop on window frames, which is not only unsightly, but also dangerous. In extreme cases, black mould can even grow on window frames as well as cills which isn't good for you or your family. Understanding the reason for condensation is crucial to understanding how to handle it. Condensation occurs when the temperature of the glass drops below the dew point – the point at which water vapour in the air becomes liquid water. It is therefore common to observe it at late at night or in the early morning, when the dewpoint is at its highest and air temperature is higher than the glass surface. Condensation in double-glazed windows will become more frequent as the temperature drops and humidity levels increase. It is a normal phenomenon, and doesn't mean that your double glazing has problems. If the condensation is visible on the outside of your window and disappears once the sun rises, then there is no reason to worry about it. misty double glazing repair -glazed windows that have been damaged or faulty will not insulate as well as they should, which can lead to higher bills. If the seals are broken, moisture could get in between the two panes and cause the windows to mist. The causes that lead to misted double glazing are many but there are some main causes that are worth looking out for: If you notice condensation on the inside of your window, this is usually the first sign that there is a problem. Glass damage or water stains caused by the trapped moisture between the two panes could be the next sign. This could be due to damage caused during installation or just gradual wear and tear as time passes. This could mean that your window is coming to the end of its life and should be replaced in order to increase the insulation efficiency of your home. How can I get rid of this? Double glazing is a fantastic investment to improve the efficiency of your home's energy usage and the appearance of your windows. However, if your double glazing is misty or cloudy, it could ruin the appearance of your windows. Thankfully, the answer to this issue is simple and cost-effective. Double glazing that is misted is the result of condensation or moisture entering the space between your double-glazed windows which must be airtight. This is usually a sign that the window seal is broken and needs to be replaced. Condensation on the outside of double-glazed windows that are brand new is normal, especially during colder temperatures. This happens because the glass has been chilled by air that has heated up and reached its dew point. When this water vapour reaches the cold glass surface it becomes visible and will eventually disappear as the glass warms again. It is usually the case that double-glazed windows are misting inside that you realize this is an issue and something has to be done about it. This is because the condensation indicates that there is damage to the seal between the two glass panes of your window and can be an indication of poor installation or the use of chemicals used in cleaning products. To eliminate condensation on your double-glazed windows, there are several options you can consider. You can wipe them clean with a damp cloth to get rid of the condensation. You can spray them with a glass cleaning solution that is designed to remove the haze caused by condensation. You can also use the dehumidifier inside your home, this will take the moisture away and prevent it from building up on windows. Professionally-designed solutions can be used 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 dry out the glass and prevent further problems. However, this can be risky and should only be undertaken by a seasoned professional. This procedure will restore the double-glazed windows back to their original condition and ensure that you don't suffer from misting or condensation problems in the future. What is the best option? Condensation is a common feature on the outside of new double-glazed windows. This is a sign that your windows are working well. It can be easily removed. The condensation is caused by the temperature difference between the air inside the home and the glass surface. If you notice condensation between the double-glazed glass panes, it is not normal. You should immediately take action. The window seal is broken and moisture has the ability to get into the space between the glass panes. This can lead to the windows losing their insulation properties, which could affect the efficiency of your house. The most efficient way to reduce condensation in your double glazed windows is to improve the ventilation inside your home. Opening the windows on a daily basis can help lower humidity levels and allow fresh air to circulate throughout your home. It is recommended to use extractor fans in areas that create lots of moisture such as kitchens and bathrooms. Dehumidifiers are also useful for actively removing excess moisture from the atmosphere and preventing it from condensing onto cold surfaces, like window glass. Cleaning the window glass using anti-fogging products is an additional method to reduce condensation in double-glazed windows. These products are available in a majority of hardware stores and are designed to prevent the build-up of moisture. However, it is important to keep in mind that these solutions are not permanent and will require reapplication on a regular basis. If your double-glazed windows remain covered by warranty, contacting an experienced installer is the best option to resolve the issue. A FENSA-regulated business will offer 10 years of warranty and will comply with UK Building Regulations.