"Mike Deblis" wrote in message
...
Hi,

How can you (non-destructively) test double glazing to see if it had
"popped" (lost its vacuum) without having to look for moisture inside etc.
We have some 10-year-old thinnish (maybe 14mm) double glazing that seems
very cold to the touch and is getting condensation on (not in) it. One or
two of the panes have definitely gone (they have condensation inside the
unit), but if I'm going to have those replaced, I'd like to do any that
are
failing too...

The only evacuated tube commonplace in homes today is the TV tube, and look
at how thick the glass is on the from of that to withstand the pressure. TV
tubes are held together by a strong metal band just inside the case from the
front. If that is removed, then the whole thing will explode spectacularly
(and will have your eyes out and most of your face off - so don't even think
about experimenting).

-- JJ