https://www.repairmywindowsanddoors.co.uk/peterborough-misted-double-glazing-repairs-near-me/ Why is My Double Glazed Unit Misting Up? When condensation appears on the exterior of double-glazed windows, it is not a problem and in fact, it is a sign that your windows are working effectively and retaining heat within your home. When it appears on the inside of windows it's a sign of an issue. The presence of moisture between your windows indicates that the seals aren't working properly, leaving you with more expensive heating bills and less insulation. This can be due to several reasons. 1. Faulty Seals Misting that occurs on the exterior of your windows is usually caused by condensation that has gotten into the gap between the glass panes. Usually the condensation appears as a cloudy layer and decreases the transparency of your windows. Misting in your double-glazed window is more serious and usually indicates that the seals on the insulation unit have failed. This indicates that the seal has been broken and moisture has made its way between the two glass panes, leading to the fogging and decreasing your window's energy efficiency. Double glazing that fails can also impact the appearance of your home, as well as the safety of your family. There are many reasons why your double-glazed units could fail, such as natural aging and wear as well as a poor installation or issues with the design of your window frame. It is essential to choose a reliable installer who will guarantee their work and will not make any warranty claims against the manufacturer. Water damage is among the most common causes for double-glazed units to fail. This can be as a result of poor installation or maybe a lack of drainage or spacer blocks. The moisture then begins to penetrate and, over time, cause the seals to break, leading to the onset of condensation between glass panes. Another reason that is commonly cited for a failed double-glazed unit is that the desiccant within the unit becomes satu