You can attach tiles to a wall using thin-set mortar. You’ll also need a notched trowel to create grooves within the adhesive so it flattens completely when pressed in and securely holds the wall tiles. Finally, you’ll need grout to smooth the gaps between the tiles and, ideally, a grout sealer to prevent mold. While it sounds simple enough, proper planning and execution are crucial, so carefully review the steps in this guide or hire a pro tile installer to complete this project.

The average cost for tile installation is about $2,000, with a typical price range between $500 and $6,500. On a per-square-foot basis, you can expect to pay between $5 and $45 for installation.

Several factors influence the total cost, including:

• Installation Site: Costs vary for different areas. Common project costs are: kitchen floor ($870–$6,100), countertop or backsplash ($500–$3,000), bathroom floor ($300–$2,400), or shower wall ($225–$2,000).

• Tile Type and Quality: The material significantly impacts price. For example, standard ceramic or travertine tile can cost about $1 per square foot, while luxury options like marble can be as much as $350 per square foot for the material alone.

• Project Size and Complexity: The total square footage, the complexity of the pattern, and the shape of the tile (e.g., square, rectangle, hexagon, mosaic) will affect labor and material costs.

• Site Preparation: The amount of prep work needed, such as removing old tile or installing a new subfloor or backer board, can add to the final price.

• Tile Characteristics: The tile's durability rating and porosity can also influence the price.

• Location: Labor rates vary by geographic location.

Silicone caulk shouldn’t be used in place of grout because each material serves its own purpose. Thanks to its flexibility, silicone caulk is good for sealing around the perimeter of tiled floors, where movement and expansion might occur. However, grout is more durable, making it a better option for the joints in between tiles, which need to withstand constant weight and foot traffic.

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.