On Thu, 26 Apr 2012 17:16:50 +0100, "Phil L"
wrote:

what difference does it make on new plaster?

Sorry, that was my fault for talking about two uses in one post. I was
going to make a mist coat as a 50:50 mix, but I see you recommend even
weaker at 25:75.

I'm not going to use the whole tin priming the walls, so I'll have
some left over for other jobs. I was commenting that if using it as a
top coat, I would be worried about inconsistency between batches if I
had to dilute it myself each time.