Steve wrote:

I am redoing the bathroom which has a wall mirror about 1m x 1.7m
attached to the wall by spots of glue. Don't know what glue but flat
was built in 1991.
I estimate the mirror weighs about 30kg.
Any ideas how I remove it in one piece? I would like to reuse it!
I realise I will need to put up a support to catch it when it comes
off wall.
Or is the only option breaking it and removing pieces.
Thanks in advance for any help.

Its very hard to get that glue off.

Yu have coices.

Smash the mirror. Easiest really.
Remove mirror and wall together, and clean old wall off mirror.
Cellulose thinners will do this. It's more or less a thick version of
'evostik'
Use cellulose thinners on an edge and gardually work your way across.

I managed to pull our mirror of after it had been up a mere 40 minutes
when SWMBO wanted it relocated a whole 3 " higher, and it was a swine,
tooke bits of plaster with it and a lot of solvent to clean it.

Realistically. smash it and get a new one.