Exterior wall paint painting process what should b

2022-07-22
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Nowadays, people have higher and higher requirements for beauty. Whether the architectural decoration is beautiful or not directly affects the value of the project itself. In the process of home decoration, the painting of the wall has a certain technical content, and there are different requirements for the painting process except for the differences in the coating used for the outer and inner walls. For the friends who are decorating, you know what the painting process of exterior wall paint is and the precautions for exterior wall paint painting. I'll answer it with Xiaobian

nowadays, people have higher and higher requirements for beauty. Whether the architectural decoration is beautiful or not directly affects the value of the project. In the process of home decoration, the painting of the wall has a certain technical content, and there are differences in the paint used for the outer and inner walls. There are different requirements for the painting process. For the friends who are decorating, you know what the painting process of exterior wall paint is and the precautions for exterior wall paint painting. I'll answer it with Xiaobian

exterior wall coating has the characteristics of low cost, convenient construction, improved work efficiency, rich colors and easy maintenance and renewal. It has been widely used in all kinds of buildings for many years, but problems such as uneven color, fading, chalking and peeling often occur, which seriously affect the beauty of buildings. Many people doubt, waver, and even oppose architectural coatings as finishes. In fact, the above quality problems are mainly caused by improper construction operations. In order to prevent the quality problems of exterior wall architectural coating finish, the constructor must do the following

preliminary construction preparation

the outer wall of the building is directly exposed to the air, and it should often be exposed to the wind and rain. If an outer film acts on the outer wall of the building, the service life of the building can be greatly enhanced. On the basis of this step, the requirements of decoration are met again, and the outer wall coating is paid attention to. Before the painting construction of exterior wall paint, the exterior wall needs to be maintained to ensure that the alkalinity pH value of the base is below 9 and the humidity is less than 8%; The surface is flat, the internal and external corners and corner lines are dense, and the outline is clear; The wall surface is free of water seepage, cracks, hollows, blistering holes and other structural problems. There is no powdered loose matter, oil, grease and other adherents. There are no obvious pits and bulges, and there are no hard injuries such as cracks. Start work after these are almost finished

construction conditions

as the exterior wall coating is a water-based coating, the conditions for the construction process of the exterior wall coating are relatively harsh. The construction and maintenance temperature is higher than 5 ℃, and the environmental humidity should not be higher than 85%, in order to ensure good film formation. Low temperature will cause the problem of paint film chalking and cracking. High environmental humidity usually makes the paint film dry for a long time, and eventually leads to poor film formation. Weather factors must be considered in the construction of exterior walls. Before painting, it did not rain for 12 hours to ensure that the base was dry. After painting, it could not rain for 24 hours to avoid the paint film being washed away by rain

when painting the exterior wall paint, it is best to use a short wool roller, and the painting should be in place to avoid sagging and missing painting

paint the top coat only after these are completed, but before that, check whether the primer is missed and whether it is polluted. After these are completed, the construction of the first top coat should be carried out, and the painting of the top coat should also be uniform and in the same direction

construction process

repair of exterior walls → Sweeping → Fill putty and partially apply putty → Smooth the wall → Stick the glass fiber cloth → Full puttying → Grind flat again → Primer construction → Construction of the first coat of finish paint → The second coat of finish paint construction, the above is the general process of exterior wall coating construction technology, which can be used as a reference for friends

precautions for exterior wall paint painting

1. The label should be checked before the paint is used, and it should be carefully stirred evenly. The cover must be tightly covered after use

2. The storage and construction of the coating should comply with the temperature conditions specified in the product manual, which should generally be above 5 ℃. If the coating is frozen during storage and transportation, it should be placed in a room with a higher temperature and allowed to thaw naturally. It is not allowed to bake it by fire. The thawed paint can be used only after it is confirmed that there is no qualitative change

3. The color matching of the coating is best completed by the manufacturer or distributor to ensure the consistency of the color of this batch of coating. At the same time, Jiuzheng home network reminds that if color matching is needed at the construction site, the color paste provided by the manufacturer or designated brand and place of origin must be used. According to the use requirements and proportion, a special person shall be assigned to allocate it

4. Pay attention to the protection of finished products of coating engineering to prevent man-made pollution caused by cross operation. If the wall surface that has been constructed is polluted by dirt, it can be gently scrubbed with a clean wet rag. If the pollution is serious, it should be repainted

5. Pay attention to the weather forecast before construction and avoid working before rain and snow

6. The brushing tools should be cleaned in time and kept properly after use

editor's summary: This is the introduction of the painting process and precautions of exterior wall paint. I hope it will be helpful to you. If you want to know more about it, you can pay attention to the information

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