Answer
Apr 18, 2024 - 08:42 AM
Porcelain tiles are impervious, meaning there is no or insignificant water absorption. Without water in its body, the temperature does not do anything to it. What may crack tiles in swimming pools is contraction and expansion without space to move. As per TCA - Tile Council of America, installing tiles in a swimming pool or spa, requires expansion movement joints, which is basically filling the grout lines with a flexible material every 10-12 linear feet. A lot of inexperienced contractors, fail to follow the guidelines, and when contraction or expansion happens, the tiles may crack.
