Like whats been said. 50/50 or 70/30 usually on the mist coat.
Also, another problem that might have come about is the plasterer made the whall to smooth. Did the pain just start running down the wall when you put it on? i was talking to the plasterer over the road and he said when they do new builds if the painters are annoying them, then the make the walls super smooth so the paint doesnt stick to it!
He done a bit for me behind the bath to show what he meant. He was right, it was crazy trying to get the paint to stick! and that was with 50/50 so it should have just sucked it up
Also, another problem that might have come about is the plasterer made the whall to smooth. Did the pain just start running down the wall when you put it on? i was talking to the plasterer over the road and he said when they do new builds if the painters are annoying them, then the make the walls super smooth so the paint doesnt stick to it!
He done a bit for me behind the bath to show what he meant. He was right, it was crazy trying to get the paint to stick! and that was with 50/50 so it should have just sucked it up