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Old 01-18-2018, 06:02 AM   #1
Big Taco
Registered User
Join Date: Mar 2016
Posts: 3
Marble re grout question

hey guys, forgive me if this has been addressed already. I have a bathroom floor that has 1" hexagon Carrera marble. It was originally grouted with sanded grout. The contractor sealed the tile and grout while the grout was dirty. It was then gone over with non sanded, which was my mistake. Grouts don't match up. Is there anything I can use to remove the non sanded grout and some of the original grout, so I can re grout without replacing the floor? I've tried grout haze remover, nano scrub, etc. Didn't do anything.

What will happen if I use sulfamic acid? It is polished.

Thanks in advance.
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