hi all, im in a middle of a job and have a question,have anyone ever plastererd a wall without pva'in it first, the reason is when i was there the other day when i pva the wall it took ages to go off before i could plaster it, the walls have been painted. or is it a case of waiting .i no i should of pva'd it when i left the other day but had to go . ??? :-\