https://www.repairmywindowsanddoors.co.uk/redhill-misted-double-glazing-repairs-near-me/ What Causes Misty Windows and How to Prevent It Misty windows can be unsightly but they also reduce the efficiency of energy in homes. This is why it's essential to determine and fix the root of the problem. Foggy window glass is typically a sign that your windows are approaching the end of their span. There are a variety of reasons your window glass may be hazy. Seals that are damaged The most common cause of windows that leak is a damaged window seal. Modern windows feature a triple or double-pane glass that has an air space between them, and are sealed with a vacuum at the edges. These windows are called Insulated Glass Units (IGUs) and could contain an inert gas like argon or krypton to reduce the transfer of cold or heat from the outside to your home. Like all manufactured products window seals also 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. They are also damaged by environmental elements like solar heating and cooling or humidity, or even harsh cleaning products. When window seals fail they allow humid air between the glass panes of your IGU causing condensation which clouds your view. This could result in increased energy bills and water damage as well as a decrease in the insulation properties of your windows. A window that isn't cleaned to get rid of the water that has clouded the view is a sign of a failing seal. This usually happens because the moisture has built up to the point that it has surpassed the capacity of the silica desiccant that is built-in in the frame. It is time to contact a window expert when this happens. The best way to avoid failure of the seal is to follow the manufacturer's care instructions, which are typically printed on the inside of your window frames. Avoid high-pressure window washing, because it could damage the seal and the glass