by chris_on_tour2002 »
Mon Feb 22, 2010 11:34 pm
usually once dry to view it should be ok to paint paper. if you were tiling on it i'd advise to wait.
the main issue is calcification/crystalisation that would ruin any finish that would be applied (and cause tiles to fall off).
if you need to get on and do it and it is dry, personally i'd risk it.