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sealing concrete
the Acrylic paint will seal the concrete but it wont stop the water coming through. All that will happen is that a buble of water will form until the bubble pops. Water proofing paint might do it but there is a product that builders use to seal concrete before they glue floor boards on this will probably do the trick but it is expensive and smelly. Its thinner based. I cant recall what its called but I think Bostik make it.
Regards Cristian
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