Condensation

[bkd23]

Despite having double glazing for many years I get serious condensation on all windows during the winter months. Is there any way of checking if its a problem with the windows which is causing this?

[JohnD]

It's not the windows fault (unless they do not open and have no vents).

You have insufficient ventilation and your house is too humid.

http://www.diynot.com/wiki/building:condensation_in_houses