https://www.repairmywindowsanddoors.co.uk/bexhill-on-sea-misted-double-glazing-repairs-near-me/ What Causes ? It can be frustrating when windows in your home or apartment fog. It is easy to fix the issue and prevent it from happening if you know the cause. Many people recommend using dehumidifiers to eliminate the moisture. However it does not address the root cause of the problem, which is seal failure. Moisture Buildup The most common cause for foggy or misty windows is condensation, especially in older homes with single- or double-glazed window frames. These types of windows were designed to hold the heat in your home and prevent cold air from getting in but they can cause condensation and the build-up of moisture. If not properly checked, this could lead to damage to the glass or glazed surface of your window which could lead to the need for a more expensive repair or replacement of the window. The accumulation of water on windows is usually caused by the interaction of cold and warm air. This is more common in homes that have high levels of humidity. However, it could occur even if the window seal is damaged or faulty. Every day, you add 4 to 5 pints of moisture to the air each time you boil or cook water. Showers and tumble dryers, as well as watering house plants all add to the indoor moisture. Inhaling and breathing creates a little water vapour. The air in your house is saturated with water vapour, and as it cools it will melt any surface that it comes in contact with including your windows. If you have a triple- or double-paned window and notice condensation between the panes it is likely that the seal has been damaged or broken. Usually, there will be a spacer held between two glass panes and it is designed to suck any moisture that might be in the space. The spacer is usually invisible but you can identify it by shining a flashlight on the window and looking for streaks or dark spots. When the spacer fails it is not uncommon to discover black mould in th