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I'd give it a few coats of diluted PVA (about 5:1), never fails, it'll provide a barrier to any chemicals/oil/grease on the floor while also providing an excellent surface for painting. This works for newly plastered walls, loose brickwork, pretty much anything, it's what the pro's use before they do anything.
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dont think paint bonds as nicley to pva.........but dont quote me on that, ive never tried it, all i know is when ive plastered, any area which may have pva on it doesnt paint as nicely afterwards.... the pva is used to seal the brickwork, before applying a coat of browning plaster or bonding..... i never use it to seal plaster, for that i use 4:1 water and imulsion or size........
id usr a concrete sealer designed for use proir to masonary paint.....
like every job in the building trade, preperation is everything.... ...... everything......
you only want to do this job once, so do it right.
brush out, brush out again, remove any foreighn bodys, brush out again and id go as far as hovering at this stage..... then paint on sealer, then apply the floor paint.....
my mate did his in his workshop last year, my advice is do it now before it gets cold..... his took about a week to dry and probably weeks to cure properly.....
good luck. /ubbthreads/images/graemlins/smile_smoking.gif
