I just grouted over my unglazed ceramic tile and the clean up is almost
impossible. I have been at it or 5 hours and only a quarter done. It is
taking a lot of scrubbing and there has to be an easier way! Please
You started before the grout set, right? No matter, it is probably pretty
well set by now and the only way to get it off is physically
(scraping/chipping) or chemically (acid).
When you grout, you push it into the joints and then wipe off the excess
with whatever. Within 10 minutes or so, you clean off the rest with damp
sponges...one swipe per clean side of the sponge else you just move the
grout around. Continue with the sponge to remove as much as possible. Once
the grout in the joints has set, wipe the tile surfaces with a terry cloth
towel to remove the haze - should be very little - left over after the
We had tile installed by a contractor who did a great job. When he
finished, he gave us instructions....wipe tile with vinegar in water
after 24 hours. Done. No haze. When we were shopping for our tile,
there was a woman who had just tiled her whole home with her hubby, left
haze on the tile, then threw down muriatic acid to try to get rid of the
You're going to have to use muriatic acid and even that might not work
very well for unglazed tile.
Due to its porosity unglazed tile has to be rinsed and rinsed and
rinsed again with many water changes after grouting, then whatever
haze is left polished off with a dry towel within only a couple hours,
or you're screwed.
I would contact the tile dealer or mfg before I used muriatic,
ESPECIALLY indoors...it is damn potent and boils up fumes that might
damage electronics and stuff. When the grout is cured, I'd try
vinegar/water with a stiff brush. Normally, when grouting unglazed
tile, a sealer is applied to the tile first.
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