How do I fix a bathroom tile floor without tearing everything out?
+3
We have tiles that have shifted in our bathroom from a water leak.
If the tiles are shifted, the subfloor is probably compromised and more problems will occur. May have mold under it. I think you'll have to remove tile. Also sounds like it was glued to plywood and not concrete board.
If thins set was used, the tiles would not have shifted. I think you are going to have to take up your tiles and replace. You can see mold in the picture, so yes remove and start all over.
Tiles that are set shouldn't shift. The fact that there is water involved I would considering taking everything up. I know that it's not what you want, but it's better to be safe than sorry.
If what you are showing is what you are calling shifting then I think that you are just now noticing the irregularities in the tile but if it's the cracking in the grout, just remove the grout and regrout with non-sanded grout or epoxy grout. If the tile is on concrete then this fix should last a long time, if it's on plywood, not as long. If you have a loose tile this would be a good time to reattach it.
I go with Gary B above. Clean out the old grout and re-grout.
If this is on a raised floor get somebody to check under the house to see if there is any damage to the wood floor. If the house is on a slab I can't see how you have a major problem.