K12 Waterproofings for Homes/Factory any other Industry 15-20 Years Warranty Card. Features and Benefits It forms a water impermeable layer under screeds and ceramics with high adhesion performance and semi-elastic properties. Forms a jointless, seamless, permanent, water impermeable coating. Safely used in drinking water tanks. Water vapour permeable. Easy to apply. Long working time. Resistant to chemicals and salt solutions in soil.