The common quality defects of latex paint are blistering, anti-alkali falling powder, falling, bottoming and unsmooth coating.
1. Foaming: The occurrence of foaming in the latex paint is mainly due to improper treatment of the base layer and the coating is too thick. To prevent this problem, you can evenly stir the paint before using it, master the consistency of the paint solution, and apply the glue on the front layer of the putty layer. When rework is required, the foaming and peeling area should be cleaned and brushed with 107 glue.
2. Anti-alkali powder: It is mainly because the base layer is not dried for construction. It is easy to have such problems without brushing the primer and coating too thin. If there is a case of anti-alkali powder, rework and recoat. The material that has been painted is clear, and the base layer is dried and then applied. The primer must be brushed once.
3. Flowing: The problem of falling is generally due to the coating viscosity being too low and the layer being too thick. In the construction, it is necessary to adjust the consistency of the paint. When operating, the pen should be diligent, less sturdy and diligent, so as to avoid the problem of sag and runny. In the event of a falling, wait until the paint film is dry and then sand it with fine sandpaper. After cleaning the finish, apply a top coat.
4. Through the bottom: When the paint is too thin, the material quality is poor, and the number of times is not enough to easily penetrate the bottom. Therefore, in the construction of latex paint, it is necessary to select a product with high solid content and strong hiding power. When the bottom is present, the standard for wall painting can be achieved by increasing the number of times the topcoat is applied.
5. The coating is not smooth: the paint liquid has impurities, the paint liquid is too thick, and the emulsion paint quality is poor, which is easy to cause this problem. If you want to avoid the coating from being smooth, you need to use a paint with good leveling during the construction. Before applying the last coat, filter the paint and use it. The paint should not be too thick. If you find this problem, smooth it with fine sandpaper and then apply a top coat.
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