Double glazing with condensation

[haventgotaclue]

So, is there ever a legitimate reason for double glazing to have condensation. Or is it always a sign of problems and most likely the windows need replacing?

The windows in the front of our house (facing east, if that makes any difference) have had slight condensation at their bottom, twice this week. And one window (also east facing) was completely covered with condensation, but on the outside rather than the inside.

I'm a bit cross as they're only 5 years old, but the company we used went out of business a couple of years ago, so we can't ask them to check them.

Any information gratefully received.

do you mean condensation inside the cavity betwen the panes, or do you mean condensation on the inside room surface, or do you (yes, even!) mean on the outside surface?

Does anyone drape wet washing around your home?

Hi Piglet John. The small amount was on the inside room surface and the full window condensation was on the outside surface i.e. we could touch both - the outside lot by opening the window .

Yes we do have wet washing drying downstairs. But none of the windows closest to the washing seem affected.

solution is simple.
heating and airing.
try to open the windows every day, ideally all windows as far as they go for a few minutes a few times a day.

simple physics: warm air (heated air inside) can hold a lot of moisure. opening the windows replaces the damp warm air with dryer cold air from outside, even on a rainy day.

condensation (dew) on the outside surface, usually in the mornings, is because the glass is so well insulated from the warmth of the house that it is colder than the outside air once the sun comes up or if the wind changes. It is more common with the latest low emissivity glass. I don't believe there is anything you can do about it.

Inside the house, water vapour is lighter than air and is often seen condensing on upstairs windows. Ventilation will take it outside. An extractor fan is very useful in kitchen and bathroom. bedroom windows should be opened daily for airing.

Great, thanks for your responses. I'm pleased there are improvements I can make.