A synthetic polymer emulsions for use with dubond's cement based grouts. Suitable for use in interior and exterior locations in both dry and wet service conditions. Dubond TUFFEX GT is a polymer additive for dufill cement-based grouts. Not for use with adhesives. This admixture is manufactured under an approved quality assurance system conforming to BS EN ISO 9002 and in accordance with the requirements of the environmental standards and operational scope of BS 7750:1994.