What is the main benefit of verifying substrate moisture levels before tiling?

Verifying substrate moisture levels before tiling is crucial primarily to prevent future installation issues. Moisture levels that are too high can lead to a variety of problems, such as adhesive failure, mold growth, and the eventual deterioration of both the tile and the substrate beneath it. When moisture seeps through or accumulates, it can compromise the integrity of the flooring system, leading to cracking, debonding, and other defects that are costly to repair and can require the entire installation to be redone.

By assessing and managing moisture levels prior to installation, tile setters ensure that the environment is suitable for tiling, which ultimately protects the investment made in materials and labor. This proactive approach contributes to the durability and longevity of the tiled surface, maintaining its functionality and appearance over time.