Construcolor® G01 Integral Hardening Adherent Waterproof Additive this product develops repellence to absorb and release liquid water, allowing it to escape as vapor, eliminating in this manner the washout to the surface of soluble salts present in mortar and concrete, avoiding efflorescence or “saltpeter-whitening”. G01 is resistant to sunlight, outdoor weather and alkalinity, allowing permanence of its properties over time.