What are expansion joints used for in tile installations?

Expansion joints are crucial in tile installations as they serve to accommodate movement in the substrate or the tiles themselves, which can occur due to temperature changes, moisture fluctuations, or settling. These movements can cause stress on the tiles, leading to cracking and other damage if not properly managed. By incorporating expansion joints, the system allows for this natural movement, effectively preventing cracks and ensuring the integrity and longevity of the tiled surface.

In large tiled areas, the potential for expansion and contraction is significant, making the presence of these joints especially important. They are strategically placed at intervals to distribute any stresses that arise from movement, demonstrating their essential role in maintaining the overall functionality of the installation. Understanding this purpose is vital for anyone involved in tile work, as it ensures that installations not only look good initially but also perform well over time.