A lot of the double glazes units at my place have blown*, is it worth getting the glass unit repaired or replaced or is it cheaper in the long run to replace the whole window??

* moisture in the central cavity

Sorry this should be in chat

we had a few done.

Was a lot cheaper and a huge amount less mess than getting new windows installed.

As long as the frames and hardware are in good nick then popping the trims out and replacing the glass units makes sense to me.

Its dead easy to remove the beading yourself. You can then measure the panes and order from a local supplier and pop em back in yourself.