Generally speaking, it can be observed by experience and naked eyes, and it can also be covered with a new material cloth 1m square. Exposure to the sun 1-3 hours (or heating with a hair dryer) can tell whether there is soda. If there is no soda, it can be regarded as dry before construction. Construction tools: blower dust collector, various rolling brushes, mixing barrels, paint mixing vehicles, motor vehicles, etc. After the construction operation surface is cleaned, the key parts such as the angle of yin and yang, expansion joints and construction joints should be treated first. Especially for the parts that are not easy to be painted such as drainage holes, it is necessary to strengthen the painting of waterproof primer for 2-3 times. Waterproof coiled material, waterproof coating, base coating and adhesive coiled material coating must be distinguished. Priming. In order to improve the adhesive force between the waterproofing membrane and the base, the primer can be applied repeatedly, evenly and thoroughly, and fully penetrated into the concrete base to improve the adhesive strength and shear strength. Waterproof coating must be prepared according to the product description, and the ratio is A:B=2: 1, and the amount of preparation matches the actual amount on site. Waterproof coating should be stirred evenly for about 3-5 minutes until the mixture of component A and component B is uniform.