https://www.repairmywindowsanddoors.co.uk/reading-misted-double-glazing-repairs-near-me/ Why is My Double Glazed Window Misted? Double glazing is an excellent method to boost the efficiency of your home, and to ensure the highest efficiency in energy usage. If you notice that your windows are getting misty it is a sign that the seal of your window is broken. This allows moisture to get into the insulation portion of your window and will drastically reduce the performance of your windows. Luckily, this problem is quite easy to resolve. What is it? It is possible to see condensation on double-glazed windows, especially if it is very cold and stormy. This is normal and a indication that your windows are working well, keeping cold out and the warmth in. You can wipe it away or let it go on its own. This is more serious when your double-glazed window leaks inside. This is usually a sign that the seal on your double glazing has failed, or 'failed' as it is called in the trade. When a sealed double glazed unit breaks down or fails, water can get inside the two glass panes of your window. The argon,xenon orkrypton gases that are used in these units may also leak out. When this happens the high-density gases lose their insulation properties, and your window will no longer function as an enclosed unit. 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 the gases inside your double-glazed windows as temperatures rise and fall. Using abrasive chemical cleaners on your double glazed windows can also damage the seal and cause it to fail over time. If the seal of your double-glazed windows has failed the warm air could escape between the glass panes, and cool air can get in, causing moisture buildup on the bars that hold the glass unit. This is often described as a "blown window' and can cause costly energy bills throughout the winter. Replacing the glass units of your double-glazed windows cou