https://www.repairmywindowsanddoors.co.uk/letchworth-misted-double-glazing-repairs-near-me/ Clear Up Misted Up Double Glazing It is normal for double-glazed windows to show condensation on the outside. This is a sign that they're functioning correctly. Condensation inside the glass panes, however, is a different story. Double glazing that has become smudged could be more than an eye-sore. It could also indicate that the seals on your insulated window units have been damaged or even broken. Seals If condensation forms on the outside of your double glazing It is perfectly normal and is a sign that your windows are functioning well. The reason for this is the outside air warming faster than your glass, and then reaching its dew point. However, if your windows are misting up on the inside this is a more serious issue and something you will need to take care of. This is because misting in the interior of your windows is typically a sign that there is a seal problem and that water is getting into the gap between the two panes. The windows' seals wear down over time because of ageing and wear and tear. The material could also be damaged if seals are exposed to harsh chemicals. A poor window installation could cause misting, since the installer might not have utilized the proper fixing methods or set up the frame and insulation panels properly. A spacer bar can be used to fill the gap between two panes of windows that are double-glazed. This creates a thermal barrier, and also acts as insulation. The spacer bar is coated with a desiccant that is specially designed, which absorbs moisture and keeps the gap dry. The condensation occurs when the spacer bar has been damaged or worn-out, and the water that is trapped in the gap moves through the seals. Poorly fitted and poorly maintained double-glazing isn't only a source of condensation and damp - it can also damage the efficiency of your home. This is because faulty windows let cold air in and warm air out, which can cause you