Construction process polyurethane waterproof coating cleaning grassroots: The blade will stick to the leveling layer of the skin to get rid of gray polyurethane waterproof coating type, with a broom sweeping clean the dust, especially in the root canal, drain and drain and other parts should be carefully cleaned. If oil polyurethane waterproof coating when applied brush or wire brush and sandpaper to intermediaries in oil paint and mortar surface brushing together. The surface must be flat polyurethane waterproof coating composition, depression 1:3 use cement mortar. Construction requirements of a polyurethane waterproof coating grassroots level must be clean, cement surface should calender free from sand, without hollowing. 2, roof moisture content should grassroots structures above and below ground waterproofing grassroots moisture content should be less than 10% before construction within 5%. 3, the roof should be set to a distance of every 36 of the exhaust pipe. 4, A and B material mixed units, Part B must be mixed with stir Part A. Ratio of Part A: Part B, 1: 2 (weight ratio) or 1: B 1.5 feed down eight barrel by the packaging requirements of the construction, with a wooden stick or a hand-held electric mixer for 3-5 minutes until homogeneous. Apply the mixture on the base to be used within 30 minutes with a plastic scraper or rubber scraper. Polyurethane waterproof coating composition, Huadun waterproof material, Hainan polyurethane waterproof coating is provided by Shouguang City Shield waterproof material Limited. Shouguang City Shield Waterproof Materials Co., Ltd. (www.huadunfangshui.com) Shandong Weifang, waterproof, moisture-proof materials, leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Shield waterproof material in China, leading the staff warmly welcome all inquiries negotiations to create a waterproof material Huadun a better future.