S-2 is a one-component, insoluble acrylic product that is applied by spray or brush and is a liquid waterproofing product that protects the concrete surface. S-2 generally protects concrete, cement, mortar, ALC panel, limestone slate, brick, stone, tile, wood, board, etc. from external environments such as water, chloride ion, acid rain, detergent, and materials with fine cracks. It is a material widely used in simple anti-absorption materials.