I have a small strip of small tiles in front of my bathtub that need to be replaced with large white tiles to form a border in front of the bathtub since the rest of the bathroom floor is fine. I can purchase the tiles I want from Home Depot and then the tile setter can remove the old tiles (the floor underneath is wood but might be damaged by moisture but am not sure). In some places where the damaged/missing tile is my husband used a cement filler to prevent any water leakage.