There are many types of waterproof materials, which are divided into four categories according to their main raw materials. Let's take a look at which four categories are available: ① Asphalt waterproof materials. It is made of natural asphalt, petroleum asphalt and coal asphalt as the main raw materials, made of asphalt linoleum, paper tire asphalt linoleum, solvent-based and water-emulsion-based asphalt or asphalt rubber coatings and ointments. It has the following characteristics: Adhesion, plasticity, water resistance, corrosion resistance and durability. ②Rubber plastic waterproof materials. It uses neoprene, butyl rubber, EPDM, polyvinyl chloride, polyisobutylene, polyurethane and other raw materials to make flexible tireless waterproof membranes, waterproof films, waterproof coatings, coating materials and ointments, Sealing materials such as mortar and waterstop have the characteristics of high tensile strength, high elasticity and elongation, good cohesiveness, water resistance and weather resistance. If used cold, they can extend the suitable life. ③Cement waterproof material. Admixtures that have the effect of accelerating and densifying cement, such as waterproofing agents, air-entraining agents and expansion agents, can enhance the water repellency and impermeability of cement mortar and concrete; accelerating agents configured with cement and sodium silicate as base materials Mortar is very effective for plugging and waterproofing. ④Metal waterproof material. Thin steel plates, galvanized steel plates, profiled steel plates, coated steel plates, etc. can be directly used as roof panels for waterproofing. Thin steel plates are used for metal waterproofing in basements or underground structures. Thin copper plates, thin aluminum plates, and stainless steel plates can be made into waterstops for deformation joints in buildings. The joints of the metal waterproof layer should be welded and painted with anti-rust protective paint.