https://www.repairmywindowsanddoors.co.uk/northampton-misted-double-glazing-repairs-near-me/ Why is My Double Glazed Unit Misting Up? When condensation appears on the outside of double glazing it is not a problem and in fact, it is a sign that your windows are operating properly and keeping heat inside your home. If it is visible on the inside of window panes there is an issue. If you notice that there is moisture between your windows, it means that the seals aren't working. This can result in higher heating bills and lower insulation. This can be caused by various factors. 1. Faulty Seals Mist that forms on the outside of your windows is usually caused by condensation that has gotten into the space between the glass panes. The condensation typically appears as a cloudy layer that reduces the transparency of your window. The misting that occurs within your double glazing is more serious and indicates that the seals on the insulating unit have failed. This indicates that the seal has been damaged and moisture has found its way in between the two glass panes, leading to the fogging and decreasing your window's energy efficiency. Failing double glazing can also affect the overall appearance your home as well as the safety of your family members. There are a myriad of reasons for your double-glazed units to fail. They could be due to natural wear and tear, a defective installation or design issue with the window frame. It is important that you only use an established installation company that will guarantee their work, and not invalidate any warranties from the manufacturer. Water damage is among the most common causes for double-glazed units to fail. It could be due to a poor installation or insufficient drainage or spacer blocks. The moisture will then seep into the seals, which causes them to fail over time. This causes condensation between the glass panes. Another reason that is commonly cited for a failure of a double glazed unit is that the desiccant within the un