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Why is My Double Glazed Window Misted? Double glazing is a fantastic method to boost the efficiency of your property and ensure optimal energy efficiency. If you notice that your windows are leaking this could be an indication that the window seal has been damaged. This can allow moisture to enter the insulation area of your window. This could drastically decrease the performance of your windows. Luckily, this problem is relatively simple to fix. What is it? It's possible to get condensation on your double-glazed windows, especially when it's cold and stormy. This is normal and a indicator that your windows are operating well, keeping the cold out and the warmth in. You can clean it up or let it clear on its own. If your double glazed window is leaking on the inside though it is more of an issue. This could be an indication of a broken seal or failure 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. The argon, xenon and krypton gasses that are used in these units can also escape. After this happens the high-density gases lose their insulation properties, and your window no longer functions as an enclosed unit. One of the primary reasons for a window's seal to fail is the natural wear and tear that occurs over the years. This is due to the constant expansion and contraction of gases within your double glazed windows when temperatures fluctuate. Cleaning with chemicals that are abrasive on your double glazing can also damage the seal and cause it to break over time too. If the seal of the double-glazed windows you have is broken warm air can escape between the glass panes and cool air could enter and cause moisture to build up on the spacer bars inside the glass unit. This is known as a “blown” window and could cause costly energy bills during winter. This problem can be solved by replacing the glass units within your double-glazed windows. This is a much more cost-effective solution than replacing the whole window and will ensure that your home is insulated and sealed. It's important to make sure that the business you choose to replace your double-glazed windows is insured because this can safeguard you in the event of unexpected issues with your installation. Why is this happening? misty windows repair within double glazing isn't only unsightly but can also lead to mildew that will ruin timber window frames. In extreme instances black mould can develop on window frames or cills. This isn't a good thing for your family. Understanding the cause of condensation is crucial to understanding how best to deal with it. Condensation is caused when the surface temperature of the glass falls below the dew point, the point at which the water vapour in the air becomes liquid water. It is therefore common to observe it at night or in the early morning, when the dewpoint is highest and the temperature of air is higher than the glass surface. As the weather gets colder and the humidity levels increase condensation inside double glazed windows is more likely to occur as it develops much more quickly. In the majority of cases it's a natural phenomenon and does not indicate an issue with your double-glazing. If the condensation appears only on the outside of the window and disappears when the sun rises it is not a reason to be concerned. Damaged or defective double-glazed windows aren't able to provide the insulation as they ought to and this can result in higher energy bills. If the seals have been damaged then moisture could pass through the two panes of glass and will eventually cause a misting effect. There are a variety of causes for misted double glazing, however there are a few that are worth examining. When you notice condensation on the inside of your window, it is usually the first sign that something is wrong. The next phase will be when you begin to notice water staining or damage to the glass caused by trapped moisture between the two glass panes. This could be due to a problem during installation or even wear and tear that occurs over time. This could indicate that your window is coming to the end of its life and requires replacement in order to improve the insulation efficiency of your home. How do I get rid of it? Double glazing is an excellent investment in your home's energy efficiency and the appearance of your windows. But, if your double glazing is misty or cloudy, it could ruin the appearance of your windows. Thankfully, the answer to this problem is easy and cost-effective. Misted double glazing is caused by condensation and water getting into the space between the panes of your double-glazed window that should be sealed air-tight. This is usually an indication of a damaged seal inside your window and requires fixing. Condensation on the outside of new double-glazed windows is normal, particularly during colder temperatures. This happens because the glass has been chilled by the air that has heated up and reached its dew point. The water vapour will be visible once it reaches the cold surfaces on your windows. It will disappear as soon as the glass is warmed back up. It is usually only when double glazed windows are misting inside that you realize this is a problem and something needs to be done to fix it. The condensation indicates that the seal between the two glass panes is damaged. It can also be a sign of a poor installation or chemicals in cleaning products. There are a variety of methods to eliminate the condensation that forms on your double-glazed windows. You can try wiping them clean with a damp cloth, this usually removes the condensation. You can spray them with a glass cleaner that is specifically designed to eliminate the haze caused by condensation. You can also install a dehumidifier in your home, which will help to take the moisture away and prevent it from accumulating on windows. There are professional measures that can be taken to repair your double-glazed window mist, this involves drilling a small hole in one of the windows and then pumping in a special desiccant, which helps dry out the window and avoid any further issues. This is an extremely risky process and should only by done by an expert. This method will restore your double-glazed windows to their original condition and will ensure that you don't suffer from misting or condensation issues in the near future. What is the best choice? It is normal for double glazed windows to have condensation on the exterior surface of the glass panes. This is a sign that windows are functioning properly and it can easily be wiped away. The condensation is caused by the temperature difference between the air in the house and the glass. However, if there is condensation between the panes of glass that make up your double-glazed windows, this is not normal and should be dealt with immediately. The window seal has been damaged and moisture is able to enter the space between the glass panes. This can result in windows losing their insulation properties, which will reduce the energy efficiency of your house. The best method to reduce condensation on double-glazed windows is to improve the ventilation of your home. Opening the windows on a daily basis will reduce humidity levels and allow fresh air to circulate around your home. It is also recommended to use extractor fans in areas that produce a lot of moisture like bathrooms and kitchens. Dehumidifiers are also helpful in actively removing excess moisture from the atmosphere and keeping it from condensing onto cold surfaces, such as window glass. Another effective solution for reducing condensation in your double glazed windows is to clean the window glass with an anti-fogging product. These products can be found in a majority of hardware stores. They are designed to reduce moisture build-up. However it is important to note that these solutions aren't permanent and will need to be reapplied regularly. If your double-glazed windows are still covered by warranty, the most effective way to solve any issue with misting is to contact a professional installer. It is best to use an FENSA licensed company since they will provide a 10 year guarantee and will abide by UK Building Regulations.