We painted the wall twice, and many people may not know why. Apply primer first. It is to strengthen the adhesion between bass and tower jacket. It can penetrate into the pores at the grassroots level and be deeply embedded in the bottom layer. It forms a strong adhesion with the substrate, and at the same time has paint, which has good adhesion and plays an enlightening role. Primer can seal the pores of the base, prevent the alkali components in cement from infiltrating, and lead to the hair quality of the coating, which is often called flooding alkali, and at the same time reduce the usage of the coating. Therefore, it must be painted evenly, without showing the bottom, leaking, uniform thickness, oil-free and so on. Paint is directly coated on the outer layer, so the technical requirements for paint construction are also strict. During construction, the arrangement of workers and the matching of time need certain skills. In addition, when applying the second coat of paint, wait until the first coat of paint is dry.

When painting, it needs to be shaped once, and it can't be repaired. It is necessary to ensure that the coating is uniform in color, uniform in thickness, non-penetrating, non-leaking, non-discoloring and bright in color separation. For dark paint, please try not to add water. If the proportion of water in barrel wall paint is different, the paint color may be inconsistent. Paint is the last coat of paint and the last coat of building wall decoration. The overall effect after renovation is reflected through this layer. Therefore, the requirements for the materials used are very high, including not only good chromaticity and brightness, but also good pollution prevention, aging resistance, moisture resistance, mildew resistance, no environmental pollution, safety, non-toxicity, no fire danger, convenient construction, fast coating drying speed, supplementary light and color, good air permeability and so on.

It has decorative and protective functions, and also needs to be resistant to harsh environment. The reason why the paint needs to be brushed twice is the spray hood and strong light. Many car owners easily ignore the role of primer. Primers are actually very useful. Enhance the adhesion between foundation and paint. It penetrates into the pores of the foundation, forming a claw-shaped deep bottom, forming a strong adhesion with the foundation, and at the same time having paint and very good adhesion, which can play a role in inheritance. In order to prevent the alkali penetration of cement, the pores at the grass-roots level are closed, and coatings are made to reduce the use of coatings. So it must be painted, and it must be painted evenly, without revealing the bottom or leaking. Thick, thin, uniform, non-flowing, etc.

Paint is directly applied to the outer layer, so the technical requirements for paint construction are also very strict. The arrangement of workers and the matching of time during construction require certain skills, and the paint must wait until the first paint is dry. Moreover, the second coat of paint needs to be reshaped once, and it can't be repaired. The coating is uniform in color and thickness and not exposed. According to the smoothness of the cement surface, place 1-3 times that you feel. First level the wall, polish it, brush it again, and finally brush the wall twice. Note: it is best not to paint the interior wall more than 4 times. The paint film is too thick, and the indoor humidity is too low, so the paint film is afraid of cracking. After the external wall base is cleaned, mix the ground with double rain dew and cooked rubber powder. Then brush latex paint and polish it for 2 ~ 3 times.