You can technically install tile over tile, but we don’t suggest it. Installing tile over any surface that isn’t a completely flat and prepared subfloor will result in a shoddy overall job, uneven flooring, tiles that don’t adhere, extra weight, gaps, cracks, and room for moisture and dirt to enter. For the best results, only install new tile on a flat, sanded surface like subflooring or concrete that is prepared for tile.

If you have asbestos tile and would rather tile over it than remove it, or if your existing tile is completely flat and bonded tightly to the floor, you may be able to tile over existing tile. But experts recommend thinking twice before you do.

Your tiles will have a significant visual impact on your bathroom, so you’ll want to make a thoughtful decision. Once you land on the tile material that suits your needs and budget, you can consider the color schemes you want. Consider whether you want something modern, classic, or eye-catching.

Thinset mortar is the best adhesive for ceramic tiles on concrete. It is easy to work with and has a slower dry time than mastic or epoxy mortars. This longer dry time gives the installer more time to adjust tiles, which is especially useful for DIYers who may not have tile installation experience. It can also be built up to help level any depressions or gaps in the concrete subfloor.

The best paints for shower tiles include epoxy, latex, or acrylic. Ideally, you should look for paints that are waterproof and mildew-resistant if you plan to paint shower or other bathroom tiles. You can even find waterproof paints made specifically for tiled surfaces, which will be the best option for shower tile paint that lasts as long as possible.