I will soon be putting up a new plasterbaord ceiling and had been thinking this would need to be plastered/skimmed before painting. However I have been told there is no need to have the boards plastered, just to use tapered edge plasterboards then tape and filler the joints and then simply paint. I have always thoughts that it should be plastered/skimmed before decoration. Is this good practice or a short cut/bodge. Any thoughts please on the best way of doing this? Thanks