On Sun, 9 Aug 2020 21:38:45 +0100, John Rumm
wrote:

snip

Like, even if you get the cement render on, is it shallow / flat
enough to allow for the plaster layer ... and that's ignoring keeping
it all plumb!

There are ways of cheating with that - like screwing up vertical battens
to the wall about 4' apart and getting them plumb and co-planer. Then
slap the render on, and rule it off using the battens. Let it go off a
bit and remove the battens, then fill in the gaps.

Yeah, I have done that with floor screeds and seen 'them' doing it
with the galvanised corner beads.

(you can even get metal beads designed for this job that you just leave
in place and they become part of the base coat)

Cool (till you find one when trying to put a shelf up). ;-)


The render isn't so bad, once you know what constitutes the right
consistency as you can generally run a straight edge over it as it's
going off slightly and it doesn't matter about the actual finish.

I normally find I am
getting "ok" just as the job is about over :-)

Yup, till you have done enough of it like some of your woodwork you
have shared here. ;

Well even then you make mistakes, but you just need to find ways of
fixing them as you go. (or turning them into a "feature"!)

;-)

Cheers, T i m