Gray grout is turning white
Our bathroom floor was grouted Tuesday. This evening I noticed areas that appear to be turning white. Any idea what this is and the cause?
This is the second issue we had with the floor. The first time the tile was laid, the floor was not level. It was a complete tear out thanks to guidance I received on this forum. I really don't want to go to the contractor with this until I have a good understanding of what this is and a remedy if there is one. Grout used was mapei warm gray with grout boost. The shower was grouted (warm gray) a few weeks back and it does not appear to have this problem.