1. Preparation before construction: brushes, gloves, shovels, scrapers, rollers and polyester cloth.
2, the surface of the base must be smooth, clean and dry, can not have loose, sand holes or holes, if there are these phenomena to level with cement mortar, the surface of the base had better be cleaned with a brush.
3. Brush the polyurethane waterproof coating on the base surface with a scraper or brush, and brush it on a large area with a roller. When brushing, it is required to be thin and uniform, and it is best to brush it two or three times.
4, brush the first time there are cracks to stick polyester cloth, and make the polyester cloth flat on the coating, and then brush polyurethane waterproof coating on the polyester cloth, compaction, there is no wrinkle or empty drum phenomenon. Wait for the first time to dry before brushing the second time.
Construction technology of polyurethane waterproof coating
1, waterproof base should be dry, smooth and clean, uneven places and gaps should be leveled with cement mortar.
2. Dilute the prepared coating with a proper amount of diluent (200 # gasoline or xylene), and then apply a thin layer to pretreat the base.
3, paint is generally divided into three layers, such as the first layer of paint curing (generally 24 hours) and then brush the next layer; Apply vertically between each layer.
4. Strictly implement proportioning (A: B = 1: 2 or according to packaging requirements). During construction, the components A and B are poured into a clean container, stirred evenly, and painted evenly on the base with a plastic or rubber scraper.