Grout sealing is a crucial step in tile installation and maintenance that involves applying a specialized sealant over grout lines. This sealant acts as a barrier, preventing moisture, dirt, and stains from penetrating the grout, which is porous and can discolor over time. The process starts with cleaning the grout lines thoroughly to remove any debris or existing stains. Once dry, a sealant is applied using a brush or applicator, ensuring complete coverage. This protective layer not only enhances the longevity of the grout but also makes it easier to clean and maintain, ultimately preserving the aesthetic appeal of tiled surfaces.