Grout color not even
We just put in a new bathroom and had some black/white hex tile put on the floors with grey grout. I don't know the brand, but our contractor said it's a combo grout/sealer.
It's been down for a week now and DH noticed that there are some patches where the grout is darker than in other areas. He tried to wipe an area with both light and dark grout down with a very wet towel, but it didn't make any difference by morning.
BTW, we live in the northeast, so definitely no excess humidity nowadays, so I can't believe some areas aren't dry yet?
Any thoughts as to what the problem could be... or any potential solutions?