https://www.repairmywindowsanddoors.co.uk/bishops-stortford-misted-double-glazing-repairs-near-me/ What Causes Misty Windows and How to Prevent It Windows that are stained can be ugly but they also reduce the efficiency of energy in homes. This is why it's crucial to identify and address the root of the issue. Foggy windows are an indication of old windows. There are a myriad of reasons your window glass could appear cloudy. Damaged Seals The most frequent cause of windows that are smudges is a broken window seal. Modern windows are constructed with a double or triple pane of glass separated by an air space and vacuum sealed around the edges. These windows are called insulated glass units (IGUs) and may also contain an inert gas like argon or Krypton, to further reduce the transfer of heat or cold from the outside to your home. Like all manufactured products, window seals have an expected lifespan and may eventually fail from normal wear and tear or damage caused by external forces like high winds or improper installation. However, they also suffer from environmental factors such as solar heating and cooling, humidity and even the use of harsh cleaning products. If window seals fail, they allow humid air to get between the glass panes of your IGU which causes condensation that blocks your view. This can result in higher energy bills and water damage as well as a decrease in the insulation properties of your windows. A clear indication of a failing seal is windows that cannot longer be cleaned to get rid of the moisture that has encroached on the view. This is usually because the moisture has built up to a point where it has exceeded the capacity of the silica desiccant that is built-in in the frame. It is time to contact a window specialist when this happens. The best way to prevent seal failure is to follow the manufacturer's maintenance instructions, which are typically printed on the inside of your window frames. It is also an excellent idea to avoid high-pressur