Stonhard offers two additives for its flooring systems. Stonplus Rapid is a prepackaged liquid additive engineered to accelerate the curing process of Stonhard cementitious urethane products when installed in cooler temperatures. The volume of Stonplus Rapid can be adjusted based on specific environmental conditions to ensure optimal balance between curing time and working time. Stonplus PROTECT acts as a permanent bacteriostat and fungistat against a broad range of bacteria and fungi. This antimicrobial, organic thione compound is toxicologically safe, EPA registered and contains no heavy metals. Washing the floor does not affect its properties. The ideal application of this product is in environments where hygiene is critically important, such as: hospitals, pharmaceutical facilities, research laboratories, clean rooms, food processing facilities, breweries, dairies, commercial kitchens, lavatories, and showers.