What is the main purpose of using grout in tile installations?

The main purpose of using grout in tile installations is to fill the spaces between tiles and provide structural integrity. Grout serves a critical role in the overall stability of the tiled surface. When grout is applied, it effectively locks the tiles in place, helping to distribute weight evenly across the surface. This not only prevents movement and shifting of tiles but also contributes to the durability and longevity of the installation.

Additionally, grout can help to fill small gaps and irregularities, which enhances the tile’s resistance to moisture and dirt. A properly grouted installation minimizes the risk of water seeping under the tiles, which could lead to mold and damage to the substrate.

While grout can enhance the aesthetic appeal of a tile installation by showing different colors or finishes, that is a secondary function. The primary focus remains on structural support and ensuring that the tiles maintain cohesion over time. Grout's role is pivotal in preventing any displacement during changes in temperature, weight bearing, or slight movements in the underlying structure.