Condensation on the outside of modern double glazing is nothing to worry about, it's actually proof that your double glazing is working correctly.
The way double glazing works is there are 2 panes of glass with a gap in between, at dw windows we fill that gap with Argan gas which is an insulating gas. We also use an Energy efficient coating on the inside pane of glass to reflect heat back into your property.
Therefore the inner pain of glass stays at room temperature and the outer pane of glass is the same as the outside temperature. If the outside temperature is below what's called a due point and there is enough moisture in the air then condensation will form on the cold surface of the glass.
Different windows on your property will react differently depending on the position of the sun, the wind direction and if there's any shading from trees or other buildings, so again it's quite normal for some windows on the front of the house for example to have condensation on the outside and the windows on the back of the property to have none.
www.dwwindows.co.uk
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