The first step of school wall treatment: plastering.
Gypsum is a paste made of materials similar to lime and pasted on the wall, but before plastering, the wall should be kept fresh and clean, including dust and looseness on the wall. Clean objects, dirt and grease, and clean walls. For example, if there are obvious stains on the surface of masonry base, the surface must be filled with 1: 3 cement mortar in advance; Water the wall before plastering. Generally, water the bottom of brick wall twice, and the filter brick surface is about 8- 10 mm, which can meet the plastering requirements.
The second step of school wall treatment: scraping putty.
Before scraping putty, the school wall must be plastered before leveling. The next step is to paint the wall with putty. In the process of wall decoration, putty must go through several processes, and the materials used must also have a delicate feeling. Apply putty evenly on the wall to form a flat and clean decorative effect. Generally, about one kilogram of gypsum interface agent 2 yuan and 20 kilograms of gypsum interface agent 40 yuan are applied thinly on the cement wall, and the first putty project is completed.
The third step of wall correction treatment: sand filling.
After the putty project is completed, the school wall treatment needs to be filled with sand. Sand filling refers to the smoothness of the wall that is contacted once with putty, so that the uneven surface of the wall becomes smooth. Sand replenishment is a hard work and requires patience. In particular, the combination details of doors, windows and walls should be carefully observed to avoid bubbles in the process of brushing latex paint.
The fourth step of school wall treatment: brush.
In the process of school wall treatment, latex paint can be sprayed twice directly, but before painting, the wall will be covered with a layer of waterproof putty, which can effectively prevent mold from appearing and falling off. The spraying method is better, but the upper layer of waterproof putty (decorative putty bottle) should be decorated first, sprayed with a thin layer, polished with 1200 sandpaper, and then sprayed with latex paint. Yes, only once. If the wall decoration takes a long time and you want to restore the paint on the wall, you can take off the original paint and spray it directly on the wall.
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