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Old 01-18-2018, 06:02 AM   #1
Big Taco
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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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Old 01-18-2018, 09:43 AM   #2
Houston Remodeler
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Keep any and all acids away from the marble as they will permanently etch the marble making it dull.

The only way to remove the grout is to scrape /grind it from between the tiles.

You'll need something like a carbide dental drill and tons of patience.

I'd start by emptying the cuss jar.

For when DIY isn't such a good idea...
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