I know that if the spacing between tiles is more than 1/8", you're supposed to use sanded grout. But is there a practical limit on how wide the space can be?
There's almost a half inch space between the bottom row of shower tiles, which have the curved lip cove shape, and the edge of the floor tiles. When the house was built 45 years ago, the tilesetters covered up the problem by leaning the bottom of the tiles outward to cover up the gap. I've retiled all but the bottom row but I'm back to the original problem. I want to set the bottom row flush against the wall but I'm not sure even sanded tile will hold if it's filling a gap almost a half inch wide.