On Sat, 08 Oct 2005 10:19:55 GMT, dkh wrote:

We got new upvc double glazed windows fitted to the front of our house this
week.

My wife is convinced that all our condensations problems on windows would
disappear (we had pretty bad condensation on the old single pane sash
windows)

However this morning we noticed that the windows in our bedroom were a bit
(not enough to need wiped down) steamed up (say bottom 15-20% of each pane)

There was no condensation on any other of the new windows but there was a
bit on each pane in our bedroom (6 panes).

Is this just due to the moisture from our breath during the night?
Is it fair to expect zero condensation on the windows, should we contact
the DG company..

I did google a bit on this but most posts referred to moisture condensation
between the panes which is not what we are experiencing.

Some condensation on DG is to be expected. To eliminate it completely, you
would need better insulation around the frame (it's conduction through that
which leads to the glass getting cold enough for moist air to condense out).
I think some makes are better than others in this respect.

I've also had a couple of DG windows fitted this summer. On the first cold
night, I was alarmed to see condensation along the bottom of each panel,
which wasn't on the inside. I was pondering the likelihood of both units
having failed so soon, when it occurred to me to open a window and stick my
hand out. The moisture was on the outside (as it often is on your car
windows). The DG unit was obviously allowing the outer pane to get very
cold.

--
Honk if you've slept with Commander Riker!