This time of the year (still cold) then to be on the safe side I would allow
up to 2 weeks to dry properly, and prime with diluted emulsion as stated on
I'd leave it a week - but depends on how dry it looks. Depends on how thick
the coat is. If just a skim (1/4"), 3-4 days may be enough. Turn the heating
up or get a small fan heater in there for a few days if you want to speed it
Don't paint before its fully dry - I did once and it left a strange
unattractive finish on the final coat of paint, even after repainting.
To prime, just use watered-down emulsion. Probably get away with normal
emulsion if you only want to do one coat.
Wrong! never ever speed up the drying process of a skimmed plastered wall
with a blower heater or any other form of heating as this will result in
the plaster cracking the plaster is also known to crack on old crumbly wall
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