part of doing tile work. Your situation is not uncommon at all. The key before the tile grout dries is to clean off the tile surface over and over and over with clean water each time. But, after the tile grout has set, the haze then has to be removed as Dodgeman stated. I have never used this product, but I would definately read the instructions first before I put this on my "uncured" grout. Grout takes three days to cure out and stuff on it before that time COULD cause problems down the road.