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white backsplash has dark grout haze, what’s the best thing to do? ok

Joel Colombo
2 years ago

I just installed my backsplash tonight. White porcelain hexes with a charcoal sanded grout. I used the same grout on 3 bathrooms and had no residual effect but here it created a haze. I washed everything with a tile sponge (without too much pressure as it just dried 20-30 minutes before i cleaned up).

What would you recommend I try and when... right away or wait a few days for grout to fully cure? Seems to be on about a third of the tiles really bad like the pic, and faint on many others.

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