https://www.repairmywindowsanddoors.co.uk/cheshunt-misted-double-glazing-repairs-near-me/ How to Prevent Misted Windows The accumulation of moisture on the inside of your double-glazed is caused by many factors. The air inside your home is typically more humid than the outside air, which can cause the condensation of moisture to form between the glass panes. This is a problem which can affect the efficiency of double glazing. Ignoring this problem will only result in increased energy bills and damaged windows. Condensation outside If you notice condensation on the outside of your window panes, don't worry, this is completely normal. Exterior window condensation is caused when humid, warm air comes in contact with cold glass. When the humid air is brought into contact with cold surfaces such as windows, it changes into water droplets. Window condensation in the exterior occurs most often in the morning when the temperatures outside are low and the sun hasn't yet warmed the windows and evaporated the moisture. The good news is that condensation on the exterior of your windows means your double glazing is functioning effectively and preventing heat from escaping your home. The downside is that excessive condensation from windows on the outside can trickle down and cause blistering, cracking or peeling paint to your window frames. This can lead to costly repairs and replacements, so it's crucial to keep the amount of humidity within your living space in control. This can be accomplished by wiping the condensation from your windows off with a squeegee, or a clean rag. You might also want to look into a window coating that is hydrophobic. It is a clear material that lets water flow off the windows instead of sticking. It can be purchased from the majority of hardware stores and applied in accordance with the manufacturer's guidelines. A dehumidifier can be used to reduce the amount of moisture in your home. You can purchase these appliances at a variety of hardware stores