https://www.repairmywindowsanddoors.co.uk/basingstoke-misted-double-glazing-repairs-near-me/ What Causes a Misty Window? It can be a hassle when windows in your home or apartment get smudges. It is simple to fix the problem and prevent it if you understand what causes it. Many people suggest using dehumidifiers in order to remove the moisture. However, this does not address the cause of the problem, which is a seal failure. Moisture Buildup Moisture is one of the main causes of misty windows, especially in older homes that have single or double windows with glazed frames. These windows were designed to stop cold air from entering your home, while keeping heat inside. However, they could lead to moisture and condensation build-up. This could cause damage to your window's glazed or glass surface, which can result in a more costly repair or replacement. The buildup of moisture is usually caused by cold and warm air meeting and causing moisture to form on the window. This is more common in homes with high humidity levels However, it could also occur when the seal of your window is damaged or faulty. Every day, you add four to five pints of moisture to the air every time you cook or boil water. Every shower, tumble dryer use and watering of your house plants contributes to more. Even breathing in and out releases tiny amounts of water vapour. The air inside your home is saturated with water vapour, and when it cools, it will melt any surface it comes into contact with including your windows. If you have a double or triple-pane window and you notice condensation between the panes, it is likely that the window's seal is broken or damaged. There will usually be an opening between the panes. It is designed to absorb any moisture that enters the gap. The spacer is usually invisible however, you can detect it by shining a light on the window and searching for dark spots or streaks. It is not unusual to find black mold in the area where the spacer has failed. This is not just u