Everbuild Accelerator amp; Frostproofer is a liquid additive formulated to accelerate setting and hardening times of mortar, concretes, screeds and rendering to provide frost protection during the setting period. Effective even in sub-zero temperatures and can also be used in normal temperatures where a rapid set is required and as a plugging admixture. Chloride Free. Areas of Use- Mortars (not metal reinforced)- Floor screeds- External/Internal cement based rendering- Concrete (not structural)- Suitable for use as an emergency repair plugging aid when mixed neat