we have removed some poly ceiling tiles and there seems to be a white wash or something like this on the ceiling, i have pva'd the ceiling but still the paint will not stick i am at a loss as to what to do next can you please help?
We had a similar problem, suggest using alkali resisting primer. Then emulsion as normal. This primer can be obtained from Brewers or similar but is quite expensive. Not sure if pva will cause a problem though.
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