What's the best way to remove the haze from the tile after a grout job? And is it necessary to apply a sealer to the grout?
My approach to the haze is to first use some kind of acid, let it sit for a minute, then scrub with a nylon dish pad or deck brush, then neutralize with a baking soda solution.
I've read about using white vinegar or muriatic acid. I'm not sure of the concentrations though and haven't worked with muriatic acid before (gloves and eye protection seem advised, even a respirator?). I would guess a 1:1 on the vinegar and read a post on here to use a 4:1 water to muriatic. They also sell a product at the hardware store.
What are the risks to damaging the tile and/or grout?