What should be done if tiles are not level after installation?

If tiles are not level after installation, the most appropriate course of action is to use thin-set to adjust or, if necessary, remove and reinstall the tiles correctly. This ensures a proper finish and functionality of the tile surface. When tiles are uneven, they can lead to various issues like tripping hazards, unsightly appearances, and difficulties in maintenance.

By applying thin-set, you can create a more level surface and ensure that the tiles adhere properly, leading to a more durable installation that will withstand daily use. If the issue is significant enough, removing the tiles and reinstalling them provides the best long-term solution to correct the problem.

Other options do not address the core issue of uneven tiles effectively. Leaving them as is would likely result in problems down the line, such as aesthetic concerns and potential damage. Placing heavy objects on them could further exacerbate any unevenness and create stress points that may lead to cracking or breaking. Covering with extra grout might hide the problem temporarily but does not resolve the underlying issue, and it can lead to a poor-quality finish and additional problems later.