What role does a leveling compound play in tile installations?

A leveling compound is used primarily to create a flat and uniform surface that is essential for proper tile installation. When the substrate is uneven due to dips, bumps, or imperfections, using a leveling compound helps to fill those gaps and achieve a smooth, level base. This flat surface is critical because tiles need to be installed on an even plane to ensure that they lay correctly and securely. It reduces the risk of tile cracking or breaking due to uneven pressure or support when the tiles are walked on or subjected to other stresses.

While other compounds and materials might serve different roles within a tiling project, such as adhesives for securing tiles or waterproof membranes for preventing moisture penetration, the main function of a leveling compound is to prepare the surface by ensuring it is flat and even. This contributes to the overall quality and longevity of the tile installation.