On 29/04/2021 11:49, Tim Streater wrote:

We took the view that we'd rather DG units were glazed from the inside (with
no sticky inside the frame) and could then be replaced more easily if needed.

A German firm that did a friends house (not visited them since it was
done) were able to do *everything* from inside - with no scaffolding.
This was for a two storey building all windows replaced.

I am not sure how and my friend was unable to explain the process.
I can't find a link to them online in either language.

--
Regards,
Martin Brown