Painted wall specification construction process and points

First, the wall paint construction process

The construction process of the wall paint mainly includes eight steps, followed by grassroots treatment, brush interface agent, wall leveling, scraping putty, grinding wall surface, brush primer, wall surface repair, and brush finish.

Primary treatment: Remove the wall from the skin and loosening, and make up with cement mortar. Cracked areas are generally covered with kraft paper tape and white latex. In general, non-load-bearing walls such as light walls and heat-insulating walls need to be patched, and wall cloths and white latex or mesh cloths with better textures should be selected as much as possible, and the anti-crack effect of the mesh cloths will be better.

Brush interface agent: The interface agent can enhance the adhesion to the base layer, avoiding the phenomenon of hollowing and shelling of the plaster layer, thereby replacing the artificial cutting hair removal process, saving time and effort. When brushing the interface agent, be sure to brush evenly.

Leveling the walls: uneven walls need to be leveled, and plastered plaster is used to level the uneven walls so that the error on the wall does not exceed 3 mm. If the yin and yang angles are not straight, it is also necessary to use plastering plaster and straighten it with a ruler.

Batch scraping putty: It is better to use putty with high grain fineness and hard texture. Putty should be approved three times. The first pass is generally thicker because it involves leveling the issue. The second and third time will be thinner, mainly to close the light, so that the wall looks smoother and smoother. After three batches are finished, the thickness of the putty cannot exceed 3mm, otherwise it is easy to crack.

Grinding: Grinding is a key step in the lacquer process. Polishing is good and the final lacquer effect is good. Use fine sandpaper as much as possible. If the sandpaper is too thick, it will leave a deep sand mark. After polishing, you must thoroughly clean the wall to avoid too much dust, affecting the paint adhesion. The unevenness does not exceed 3 mm.

Brush primer: The primer must be evenly brushed to ensure that the walls are brushed in every place. If the wall has a large amount of paint to eat, the primer is best to add a little amount of water to ensure even brushing.

Looking for supplements: After putty polishing, there will be some blemishes. Under normal circumstances, it is difficult to see. It will be obvious only after brushing the paint again. At this time, you will need to find a supplement. Pay attention to the repair must be polished smooth, and then use a little more water to add a bit of primer brush again, so as not to brush when the paint because of the different wall with the amount of water and a color difference.

Brush finish: Do not add excessive water, which will affect the film thickness, feel and film hardness. Try to choose a little better tool. Brushing mainly pay attention to the corners, the part of each roll and the direction of paint collection. Topcoat can be brushed twice.

Second, the wall paint brushing method selection

There are three commonly used wall painting methods: brush, roller, spray. When decorating, after measuring the advantages and disadvantages of various brushing methods, choose the most appropriate brushing method according to your preferences.

Third, the wall crack prevention method

The anti-cracking treatment of the wall will have an important influence on the quality of the wall lacquer brushing. The treatment is not good, and cracking may occur in the later wall surface. When processing, cracks in the wall are generally covered with kraft paper tape and white latex. Generally, non-load-bearing walls such as light walls and heat-insulating walls need to be patched, and wall cloths and white latex or mesh cloths with better textures should be selected when they are applied. The anti-crack effect of the mesh cloths will be better.

Fourth, how to level the wall

Leveling the wall also affects the final effect of brushing the entire wall. No matter whether it is a new house or an old house, the wall must not be completely flat, and the yin and yang corners cannot be completely vertical. Therefore, plastered plaster shall be used for leveling uneven walls so that the error of the wall surface does not exceed 3 mm. If the yin and yang angles are not straight, plastering plaster is also required, and it is straightened with a ruler.

Decoration materials knowledge three trees paint cement new house