Aquafin-1K is a cementitious, ready-mixed powder, which is mixed with water to form a dense, waterproof surface barrier. It consists of Portland cement, well graded quartz sand and polymer enhanced special chemical ingredients. Aquafin-1K does not contain any ingredients which could negatively affect reinforcement or concrete. After mixing with water it cures to a hard, rigid membrane. In zones posed to cracking or movement Aquafin-2K/M is recommended.