The experts at Travertine Power Clean know that the best and only recommended way to seal grout is to color seal grout with a concrete stain that is the same color as the original grout.This serves as a coatingAny sort of topcoat sealer,including enhancers that are overapplied,causing a buildup on the surface.More for the grout, which not only seals it off,but also makes the grout look brand new and easier to clean. Clear penetrating sealers are not recommended. CONTACT INFORMATION Address: 422 S Madison Dr #1, Tempe, AZ 85281... read full review »