So, in short, you can tile over tile as long as you're working on a fairly sound surface. The surface of the existing tile should be free of mold and mildew, completely level (including grout), and without any warping or strangely-placed tiles that might otherwise interfere with a smooth new layer.

Is tiling over tiles a good idea?

Can you tile over tiles? Yes, you can and it can be great for a fast room update, too. Saving time and effort is always a good idea, as pulling the existing tiles is hard labour. However, there are factors to consider before choosing this method for a bathroom or kitchen update.

Can you put tile over existing tile?

If your old ceramic tile is worn or dated, you can lay new tile right over the old, and avoid the huge job of tearing out the old tile. ... But this assumes that the floor underneath is solid (concrete) and that there are no cracks in the existing tile (indicating underlying problems in the concrete).