Seal Marble Before Grouting Marble is porous and could easily absorb color from the grout, so it’s important to seal the stone before you grout — even if you’re using white grout. Just rub the tile’s surface with a soft cotton rag that’s damp with stone sealer.Click to see full answer. Similarly, how long after sealing marble can I grout?Usually directions tell us to grout within 16-24 hours when using sealer as a grout release. I would grout 2-10 hours after applying the sealer to be safe. After grouting, do the final cleanup either the next day or a few day later to allow the grout to cure.Also, how do you seal marble tile grout? Use an impregnating sealer for best results. Fill a spray bottle with a commercial stone cleanser or a mild, pH-neutral cleanser. Sponge a thick, even layer of marble sealer onto the stones. Wipe the excess sealer off the marble with a dry cloth after 15 minutes. Apply a second coat of sealer and repeat the process. Also know, do you need to seal polished marble? If my marble surface is polished to a high finish, does it still need to be sealed? Yes. Marble and natural stone regardless of the finish is still porous and is susceptible to dirt penetrating the surface and staining. The surface still should be sealed with a penetrating sealer.How often does marble need to be sealed? 3-6 months
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