In article m,
Niall Smart writes:
I'm renovating a small bathroom and want to tile onto a block wall
that has been finished with a sand/cement render. The 30 year old
plasterwork that was on has been removed - it more or less fell off.
The wall is out of plumb by about 1.5cm bottom to top, and surface
hollows of about 8mm over 2m. I don't think I'll get a good result
tiling onto it as-is

I was originally planning of getting a plasterer in, but was starting
to think about DIY as the final surface does not need to be perfect -
just good enough to take tiles.

Personally, I would put another scratch coat on.
You could either put this on the coat already there if it's well
attached and you can afford the loss of 1.5cm of room, or you could
take it off first, but that could be hard work.

I've posted in some detail how to get a scratch coat vertical, flat,
and true. See:
http://groups.google.co.uk/group/uk....1e3f05f98e8d4f
and substitute sand and cement for plaster. You could use plaster,
although sand and cement would be slightly better for tiling onto.

--
Andrew Gabriel
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