https://www.repairmywindowsanddoors.co.uk/fareham-misted-double-glazing-repairs-near-me/ What Causes a Misty Window? It can be frustrating when the windows of your home or apartment fog. It is easy to fix the issue and prevent it from happening again if you understand what causes it. Many people suggest dehumidifiers as a method to eliminate moisture. However it does not address the root of the problem, which is seal failure. Moisture Buildup The most common cause of foggy or misty windows is condensation, especially in older homes with double- or single-glazed window frames. The windows were designed to stop cold air from entering your home and keep heat in. However, they can lead to moisture and condensation build-up. If left unchecked this can lead to damage to the glazed or glass surface of your window, which could result in a more costly repair or replacement of the window. The moisture build-up on windows is typically caused by the collision of cold and warm air. This is more prevalent in homes that have high humidity levels. However, it could also happen if your window seal is damaged or broken. Every day life generates a shocking amount of indoor water, with every time you boil water or cook meals adding up to five or four pints of moisture to the air. Every shower, tumble dryer usage and watering of your house plants adds more. Even breathing in and exhaling releases water vapour. The air in your house is filled with water vapour and as it cools it will melt any surface it comes in contact with, including your windows. If you have a double or triple-pane window and you spot condensation between the panes, it is likely that the seal is damaged or broken. There is typically an opening between the panes, and it is designed to absorb any moisture that enters the gap. This spacer is normally invisible, but it can be identified by gently shining a light on the window to check for any dark spots or streaks. If the spacer is not working, it is not uncommon to find