Cement-based grouts have been around for decades and are very reliable, but are also the most porous and stain-susceptible of all the grouts. Instead of using just plain water to mix the grout, use MAPEI’s UltraCare Grout Maximizer, a water-based additive for grout that fortifies the flexibility and stain resistance of the grout.
Technical Services at 1-800-992-6273
Customer Service at 1-800-426-2734 (1-800-42-MAPEI)