Just had an exposed aggregate patio put in three days ago. There is a gray powder/residue all over it coveringt he stones. How do I get this off? Also when and how can I seal it and with what to get a "wet" Look? Thanks!!
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Cured concrete can be cleaned with muriatic or hydrochloric acid products available at hardware stores.Sealing concrete,especially outdoors is a touchy subject,do some research and make your own decision.I have used a water based sealer (similar to floor finish) with no ill effects to the cement after several seasons.
