Tänker ni att man kan "hissa upp" hela kaminen under både rivning och läggning av nytt golv? Utan att koppla loss den från skorstenen?
To slide out the glass and replace it with sheet metal - it may work. Replacing panels, especially parquet ones, is not a good idea. I've had this problem a few times and had no difficulty solving it. It depends on the type of chimney. Here it looks like a chimney pipe combined with thermal insulation. This requires the chimney to be raised by 3-5 cm. The problem is stabilizing it for the duration of work..