There are several different products that allow underwater repair. Pool putty can help repair chips, cracks, and loose tiles without draining your pool, but it should only be used for a temporary fix. Certain two-part epoxy adhesives will cure underwater, too. That said, while it is technically possible to fix pool tiles underwater, it is usually not ideal, depending on the depth of your pool. You will still have to reach the tile, which means you might have to dive and make the repair while submerged.

The tile spacing you should use will depend on the tile and where you’re installing it. Choosing the right tile spacers to maintain a consistent gap between your tiles is tricky. Generally, tile spacing shouldn’t be less than 2 millimeters on walls and 3 millimeters on floors because of stress relief requirements. Getting it wrong can result in uneven tiles and early repairs.

If you’re handling your tile removal yourself, seal the room using painter’s tape and heavy-duty contractor bags to prevent dust and shards from escaping. Use a claw hammer or a pry bar and a mallet to get behind the tile and pry it away from the floor or wall. Once your tiles are all removed, sweep everything into contractor bags for disposal, being careful not to overfill them. Make sure you wear a dust mask, safety goggles, and work gloves to keep yourself safe from injury while you work.

As long as you follow the instructions on your peel-and-stick tile packaging, it should not damage your walls. A possible instance when you may accidentally damage your walls is if you install tiles improperly using additional adhesives that aren’t recommended.

Also, you can damage your walls if you’re not careful when removing tile. For example, you could accidentally make holes in the drywall with a paint scraper if you don’t heat the adhesive long enough before trying to pry it off.