Organic waterproof coatings mainly include synthetic rubber, synthetic resin, and rubber asphalt. After curing into a film, organic waterproof coating forms a flexible waterproof layer, which is commonly used on the upstream surface of engineering. This fully utilizes the advantages of organic waterproof coating, which has good impermeability at a certain thickness and can form a seamless and complete waterproof film on the base surface, while avoiding the weakness of weak adhesion between the coating and the base surface. During winter construction, water-based coatings are no longer suitable. Reactive coatings should be used, and solvent based coatings are also suitable for winter construction. However, due to the environmental pollution caused by solvent evaporation, they are not suitable for use in enclosed underground projects.

Polymer lotion waterproof coatings such as neoprene waterproof coating and sbs modified asphalt waterproof coating are volatile curing type, while polyurethane waterproof coating is reactive curing type.

Polymer cement waterproof coating is referred to as js waterproof coating. At present, polymer cement waterproof coating is developing rapidly and its consumption is increasing. Japan calls this material as a water setting coating. Polymer cement coating is a two-component water-based building waterproof coating made of acrylate and other polymer lotion and cement as the main raw materials, and added with other additives. The raw materials used will not pose a hazard to the environment and human health. It has the advantages of faster drying than general organic coatings, lower elastic modulus, smaller volume shrinkage, and better impermeability. It is called elastic cement waterproof coating abroad.

Waterproof coatings are divided into two categories: Type I: polymer based waterproof coatings; Type II: Waterproof coating mainly composed of cement.

Usage: Type I products are mainly used for building waterproofing projects in non long-term immersion environments; Type II products are suitable for building waterproofing projects in long-term immersion environments.

Inorganic waterproof coatings are mainly cement-based inorganic active coatings, including polymer modified cement-based waterproof coatings and cement-based permeable crystalline waterproof coatings. This is a new type of rigid waterproof material based on cement, quartz sand, and other materials, mixed with various active chemicals. It can be directly added to concrete as a waterproof agent, or applied as a waterproof coating on the concrete surface. The material continuously penetrates into the interior of the concrete through its carrier and forms insoluble crystals with certain components in the concrete to fill the capillary channels, greatly improving the compactness and waterproofness of the concrete.