If your old ceramic tile is worn or dated, you can lay new tile right over the old ... and that there are no cracks in the existing tile (indicating underlying problems in the concrete).

though be careful about removing existing flooring. Some types of older flooring or adhesives may contain asbestos. Either leave these materials undisturbed and lay the tile over them or hire a ...

If you have a concrete subfloor, this isn’t an issue. You can lay tile directly over the existing vinyl as long as it’s ...