In article .com,
writes:
How can I secure externally beaded double glazed windows so the beading
can't be removed and the window removed by burglars. Thanks for all
replies.

Using window tape, which replaces the thin plastic/rubber strips
on the inside of externally beaded windows. It doesn't stop you
taking the external beading off, but you can't get any further
without smashing the glass as it's stuck into the frame. I don't
know if it can be retrofitted into older frames, and I could
imagine some potential problems such as it being a different
thickness and the outside seals not working as well, but that's
what new frames use nowadays. You can probably buy it from a
glazing shop (who might give some more advice on retrofitting),
and I've seen it in Wickes to go with their windows.

--
Andrew Gabriel