The basic treatment of the wall is essential before you can paint or apply wallpaper in your home. If the base course of the wall is not well done, a series of problems, such as cracking and swelling, will easily occur in the later stage of the wall. Therefore, the grassroots treatment of the renovated wall must be done in strict accordance with the standards. Followed by Xiao Bian together to understand the basic points of the wall surface treatment, home decoration does not leave regret.
First, check the new wall surface before painting wallpaper on the wall
1, check hollowing, cracks
Hollow wall will seriously affect the adhesion of the coating, etc., usually by visual inspection, tapping, hard carving, hand wipe and other methods. The phenomenon of empty drums must be completely eradicated, and repairs should be carried out by applying matching putty to repair or leveling or cement mortar with the same proportion as the wall mortar in accordance with the same construction method of the wall to ensure uniform absorption of the coating and no marks.
2, polished base plaster plaster marks
The unevenness of the lap of the substrate will affect the aesthetic appearance of the decoration. Before the construction, it must be polished and polished with a sander.
3, wall iron nail head processing
Before the construction coating, nails should be cut out and knocked off the wall, and then the anti-rust paint should be used to treat the nail head.
Second, the basic treatment of the old wall base
First of all, remove the original decorative surface of the old wall surface, such as the old paint and spray surface to shovel off. The method is to first wet the wall with water, so that the pulp becomes soft, and then use a blade to remove from the bottom up. The paint surface is not easy to remove, and it can be washed with hot water, baked with a blowtorch, or painted with a paint stripper until the paint film is softened. Then repair the wall partially. It can be smoothed with the same material as the original wall, or it can be repaired with 107 cement putty and then putty. According to the formation of the wall, it was scraped two to three times. Smooth it with sandpaper.
Third, the wall base treatment process
Different base treatment methods are slightly different, but the general requirement is that the base layer needs to be flat and clean before painting. For the blank room wall surface, leveling and cleaning is required; for the painted wall surface, the old paint needs to be removed, and the use of more than 5 years needs to remove the putty; and for the wall surface on which the wallpaper was originally attached, the wallpaper is removed and then processed.
1, brushing interface agent
After the basic cleaning of the different wall bases is finished, the interface agent can be selected next. The interface agent can enhance the adhesion to the base layer and avoid the hollowing and shelling of the plaster layer. When brushing the interface agent, be sure to brush evenly.
2, leveling processing
After brushing the interface agent, you need to level the rugged walls. For the uneven walls, use a stucco plaster to level the walls so that the wall error does not exceed 3 mm.
3, waterproof treatment
If it is a kitchen, bathroom, balcony and other waterproof walls, they must use waterproof paint. In the past, waterproof materials only required simple brushing. Nowadays, new waterproof coatings are mostly two-component or even three-component. Therefore, before construction, you need to understand how to deploy and how much to deploy. If not proportioned, the formulated waterproof coating may not achieve the original effect.
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