ACCU-RITE CA grout is uniquely formulated to be used in both narrow and wide tile joints. It provides a higher stain resistance than a Portland cement-based grout. It is the latest generation of advanced polymer-modified, fast cure, calcium aluminate cement-based colored grout available in the industry. Its unique blend of cement, specially graded mineral fillers, stain-blocking powdered latex modifiers, and high-definition colorfast pigments provide for a superior grout strength. Its AMT (anti-microbial technology) protects against bacteria, mold, and fungus associated with bacterial stains.