Can You Tile over Tile?

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.

Should you remove old tiles before tiling?

Floor Prep

If the floor has numerous loose or missing tiles, it might be better to remove the old tiles because the weak bond beneath them could weaken the new tile floor. If you opt to remove the old tiles, scrape and grind away hardened thinset to level the underlayement before laying the new tiles.