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Why is My Double Glazed Window Misted? Double glazing is a great method to increase the efficiency of your home and guarantee optimal energy efficiency. If you notice that your windows are misting this could be an indication that the seal of your window is broken. This can allow moisture to get into the insulation portion of your window and will drastically reduce the performance of your windows. Luckily, misted units is relatively simple to fix. What is it? It's possible to get condensation on double-glazed windows, particularly when it's extremely cold and stormy. It's normal and a indicator that your windows are functioning well, keeping cold out and heat in. You can clean it off or let it clear by itself. If your double glazed window has a tendency to mist on the inside it is more of an issue. This is an indication of a broken seal or malfunction in your double glazing. When a sealed double glazed unit breaks down or fails, moisture can be able to get into the glass panes of your window. This can cause the argon, xenon or Krypton gas that is utilized in the windows to leak out as well. After this the high-density gases lose their insulating properties and your windows are no longer a sealed 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 in your double-glazed windows is caused by temperature changes. Double glazing seals are susceptible to damage by applying abrasive chemicals to them. If the seal on your double-glazed windows is damaged, it means that warm air can escape between the glass panes, and cool air could enter which causes the condensation of moisture to occur on the spacer bar inside the glass unit. This is referred to as a “blown” window and could lead to expensive energy bills in winter. Replacing the glass units in your double glazed windows can solve this issue. This is a far more cost-effective solution than replacing the whole window and will ensure that your home is sealed and insulated. It is also a good idea to check that the company you choose to replace your double glazed windows is insured because this can safeguard you in the event of unexpected problems regarding the installation. What's the reason? Condensation within double glazing isn't only unsightly but it can also lead to mildew that can deteriorate wood window frames. In extreme instances, black mould can grow on window frames as well as cills which isn't good for you or your family members. Understanding the cause of condensation is essential to understand how to handle it. Condensation occurs when the temperature of a glass falls below the dewpoint – the temperature at which water vapour in the air transforms into 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 in double-glazed windows will become more frequent as the weather becomes colder and humidity levels increase. In the majority of cases, it's a natural phenomenon and does not signal a problem with the double glazing. If the condensation only appears on the outside of the window and disappears when the sun rises it is not a reason to be concerned. Double-glazed windows that are damaged or defective aren't as insulating as they should, which could lead to higher bills. If the seals are damaged, water can get between the two panes and cause a misting. The reasons that lead to misted double glazing can be numerous but there are a few major causes worth checking for: When you see condensation on the inside of your window, it is usually the first indication that there is a problem. The next phase will be when you start to notice water stained or damaged glass that could be caused by the trapped moisture between the two panes of glass. This could be due to damage caused during installation or just gradual wear and tear that occurs over time. This could indicate that your window is coming to the end of its lifespan and needs to be replaced to enhance the insulation of your home. How do I get rid of this? Double glazing can enhance the efficiency of your home's energy usage and the look of your windows. If your double glazing is cloudy or misty, it can ruin the appearance of your windows. Fortunately, the solution to this issue is simple and cost-effective. Misted double glazing is caused by condensation and moisture entering the space between the panes of your double glazed window that should be sealed air-tight. This is usually a sign that your window seal has broken and needs to be replaced. Condensation on the exterior of windows with double-glazed glass is normal, particularly in colder temperatures. This happens when the glass is cooled by air that has reached its dewpoint. The water vapour becomes visible once it gets to the cold surface on your windows. It will disappear once the glass warms up. It is usually only when double-glazed windows get smoky that you need to do something about it. This is because the condensation is indicating that there is a problem to the seal between the two glass panes of your window and can be an indication of poor installation or chemicals used in cleaning products. To eliminate condensation on your double glazed windows, there are several ways that you can try. You can wipe them down with a damp cloth to remove the condensation. You can spray them with glass cleaner specifically designed to eliminate condensation haze. You can also use dehumidifiers at home to take in moisture and prevent it from building up on windows. Professional steps can be taken to repair double-glazed mist. This involves drilling a hole through one of the windows, and pumping a desiccant into the window. This will aid in drying out the glass and stop any further issues. However, this is risky and should only be carried out by a qualified professional. This method will restore your double-glazed windows to their original state and guarantee that you don't face any misting or condensation problems in the future. What is the most effective solution? It is common for new double glazed windows to have condensation on the outside surface of the glass panes. This is a good sign that your windows are functioning well. It can be easily removed. The condensation is by the temperature difference between the air in the home and the glass surface. If you notice condensation in between the double-glazed glass panes this is not normal. You must take immediate action. The window seal is broken and moisture may enter the space in between the glass panes. This can lead to the windows losing their insulation properties, which will reduce the energy efficiency of your house. The most effective method to reduce condensation in your double glazed windows is to increase the airflow in your home. Opening the windows regularly will help to reduce humidity levels and allow fresh air to circulate around your home. In areas that have lots of moisture, such as kitchens and bathrooms, extractor fans are recommended. Dehumidifiers are also useful for actively taking excess moisture out of 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 can be found in most hardware stores. They are designed to prevent condensation of moisture. It is important to remember that these products aren't a permanent solution and need to be applied regularly. If your double-glazed windows remain covered by warranty, calling an expert installer is the best method to resolve the issue. It is best to use an FENSA certified company as they will provide a 10 year warranty and abide by UK Building Regulations.