Yes, you can tile over existing tiles in a bathroom, but it is not always recommended. For this method to be successful, the original tile surface must be clean, flat, and free of damage such as cracks, unevenness, mold, or mildew. While tiling over existing tiles can save time and money, there are potential drawbacks. The new adhesive may not bond properly, and the process adds extra weight to the wall or floor. Additionally, the increased height of the surface could interfere with door clearances. For the best and most durable results, removing the old tiles before installing new ones is generally the better option.

The cost to install porcelain tile is about $1,930 on average. Porcelain tile prices range from $880 to $3,000 or more. The average cost tends to be higher than ceramic tile because porcelain tile is very durable. Porcelain tile rating also factors into the material cost. Tile ratings are as follows:

• Grade 0: Walls only

• Grade 1: Walls and light traffic floors

• Grade 2: Rooms with light traffic, but not kitchens or hallways

• Grade 3: Kitchens, hallways, and entryways

• Grade 4: Any area, interior or exterior

• Grade 5: Highest durability good for any area, interior or exterior

Porcelain is a relatively affordable, mid-range countertop material. It typically costs between $50 to $70 per square foot.

Compared to quartz, porcelain is slightly more affordable, as quartz generally ranges from $50 to $200 per square foot. However, lower-quality, builder's grade quartz can be similar in price to porcelain.

Compared to granite, the price can be similar, depending on the quality of the stone. While granite slabs can range from $50 to $200 per square foot, you can find lower-end granite in the same price range as porcelain. High-end granites will cost significantly more.

Porcelain is generally more expensive than laminate, acrylic, and ceramic, but less expensive than high-end slate, concrete, and marble. A key benefit is that porcelain does not require sealing, which reduces long-term maintenance costs.

Bathrooms are naturally moisture-rich environments, so choose a durable, water-resistant tile for your tub surround. Porcelain and ceramic are two popular options that are also quite affordable. Glass is another good option that’s also low-maintenance—you just need a glass cleaner like you would use on the bathroom mirror. Natural stone tile is porous, but it’s still a viable option if you choose it in a glazed version.