Waterproof material to prevent rainwater, groundwater, industrial and civilian materials to drainage, corrosive liquids, and moisture in the air, steam and other intrusive buildings. Part of the main buildings in need of waterproofing the roof, walls, floors and basement. A wide variety of waterproof material, its main raw material is divided into four categories: (1) asphalt waterproof material. Natural asphalt, petroleum asphalt and coal tar pitch as the main raw material, made of asphalt felt paper tire asphalt shingle, solvent-based and water emulsion asphalt or asphalt rubber, paint, grease, and has good adhesion, plastic, water resistance, corrosion resistance and durability. ② rubber and plastic waterproof material. Chloroprene rubber, butyl rubber, EPDM rubber, polyvinyl chloride, polyisobutylene and polyurethane and other raw materials can be made of the elastic-free waterproofing membrane, waterproofing membrane, waterproofing coatings, coating materials and ointment, clay , waterstops, sealing materials, high tensile strength, elasticity and elongation, adhesion, water resistance and weather resistance characteristics can be cold with a longer useful life. The ③ cement waterproofing material. Procoagulant compacting the role of admixtures on the cement, such as waterproofing agent, filling agent and expanders, can enhance the hydrophobicity and the impermeability of the cement mortar and concrete; cement and sodium silicate binder configuration procoagulant The mortar can be used for plugging waterproof underground works. ④ metal waterproof material. Thin steel plate, galvanized steel plate, pressure plate, and coated steel can be used directly as the roof, used to waterproof. The thin steel plate used in metal waterproof layer of the basement or underground structures. Thin copper plate, thin aluminum, stainless steel plate made of building deformation joint waterstops. Waterproof metal layer of the junction to be welded, and brushing the rust protection paint.