What is a benefit of sealing grout after installation?

Sealing grout after installation primarily serves to prevent moisture penetration and staining. When grout is applied, it is porous, which means it can absorb water and other liquids, leading to potential damage or discoloration over time. By applying a sealant, you create a barrier that protects the grout from moisture, which can help prevent the growth of mold and mildew, as well as stains from spills, dirt, and everyday wear and tear. This protective layer enhances the longevity and appearance of both the grout and the tiles, ensuring that they maintain their aesthetic quality and functionality in high-moisture areas such as kitchens and bathrooms.

In contrast, while some modern grout types may be more resistant to staining or moisture due to advancements in materials, sealing remains a beneficial practice for ensuring durability and protecting against unforeseen issues.