Nowadays, people's demands for beauty are getting higher and higher, and whether the architectural decoration is beautiful or not has a direct impact on the project's own value. In the process of our home decoration, the painting of the wall is of a certain technical content, and there are differences in the paint used for the outer and inner walls. For the painting process this piece still has different requirements. For those friends who are renovating, you know what exterior wall painting processes are and what exterior wall paint paintings require . With Xiaobian for everyone's answer.
Exterior wall coating has the characteristics of low cost, convenient construction, improved ergonomics, rich colors, and easy maintenance and updating. It has been widely used in various types of buildings for many years. However, problems such as uneven color, discoloration, powdering, and flaking have also occurred frequently, which has seriously affected the appearance of buildings. Many people are skeptical, shaken or even opposed to building finishes. In fact, the above quality problems are mainly caused by improper construction operations. In order to prevent the quality of exterior architectural paint finishes, the constructor must do the following.
Pre-construction preparation
The outer wall of the building is directly exposed to the air, and it is often exposed to the wind and rain. If there is a layer of outer membrane acting on the outer wall of the building, the useful life of the building can be greatly enhanced. On the basis of this step, once again meeting the requirements of decoration, exterior paints have received attention. Before the external wall paint painting construction, it is necessary to carry out certain conservation on the external wall surface, to ensure that the alkalinity PH value of the grass-roots level is less than 9 and the humidity is less than 8%; the surface is smooth, the yin and yang angles and the angle lines are dense, the contours are clear; the wall surface is clear Water seepage, no cracks, empty drums, blistering holes and other structural problems. No chalking looses, no oil, grease, and other adherents. There are no obvious pits and bulges, no cracks and the like. After all of these things are completed, we can start work again.
Construction Conditions
Because the exterior wall coating is a water-based coating, the conditions for the exterior wall coating construction process are more severe. The construction maintenance temperature is higher than 5° C. and the ambient humidity must not be higher than 85% in order to ensure a good film formation. Low temperature will cause the problem of paint film cracking. The high ambient humidity usually causes the paint film to fail for a long time, resulting in poor film formation. The construction of the external wall must take into account the weather conditions. Before the application of paint, it did not rain for 12 hours to ensure that the grass-roots layer was dry. After the brushing, it could not rain for 24 hours and avoid the paint film being washed out by rain.
In the construction of exterior wall paint, it is best to use a short wool roller, brushing should be in place to avoid sagging and missing paint.
After these finishes, the top coat is applied. However, before this, it is necessary to check whether the primer has been smeared or not, and there is no contamination on it. After the completion of these operations, the first finish is applied. The brushing must also be uniform and in the same direction.
Construction process
Repair the external walls → sweep → fill the putty, partially putty → grind the wall surface → attach fiberglass cloth → puttying → repolish → primer application → first time paint finish → second time finish paint construction, The above is the general flow of the exterior wall coating construction process and can be used as a reference for friends.
Exterior paint painting matters needing attention
1. Before the paint is used, check the label and stir it well. After use, the cover must be tightly closed.
2. The storage and construction of paint should meet the temperature conditions specified in the product specification, and should usually be above 5°C. If the paint freezes during storage and transportation, it should be allowed to thaw naturally in a room with a higher temperature, and it must not be baked. After thawing, the paint was confirmed to have no qualitative change before it could be used.
3, paint color is best done by the manufacturer or distributor to ensure the consistency of the color of the batch of paint. At the same time, Jiuzheng.com reminds you that if you need to adjust the color on the construction site, you must use the colorant provided by the manufacturer to provide or designate the grade and origin. According to the requirements and the proportion of the production site, you must use special personnel for deployment.
4. Attention should be paid to the finished product protection of the coating project to prevent man-made pollution caused by cross-operation. If the wall surface that has already been constructed is contaminated by dirt, it can be scrubbed gently with a clean, wet cloth, and should be re-applied when it is heavily contaminated.
5. Pay attention to the weather forecast before construction and avoid operating before rain and snow.
6, brushing tools used should be cleaned and properly kept.
Editor's summary: About the exterior paint painting process and precautions are introduced here, I hope to be helpful to everyone. If you want to know more related information, you can pay attention to this website information.
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