Wall decoration is the key project in home improvement, and the treatment of the wall base is the foundation and key for all wall decoration, directly affecting the effect of the entire wall decoration in the later period, and there is still a problem to be noticed when the wall is processed at the grassroots level. That is, the renovation process, procedures, and precautions of the new wall and the old wall are all different. Let's follow the small series together to learn more about the key points of the basic wall treatment.
First, the new wall surface treatment considerations
1, to ensure sufficient time for the conservation period
The new wall surface must have a sufficient period of maintenance. Generally, it needs maintenance for one month. For example, the maintenance period of low-temperature or humid areas in winter needs to be properly extended to ensure that the humidity of the wall is less than 10%. A dedicated instrument (liquid crystal display dual probe wall moisture meter) can be used for wall humidity detection.
2. Whether the wall has empty drums or cracks
Hollow walls will seriously affect the adhesion of the coating, usually by visual inspection, tapping, hard scribes, hand wipes and other methods. If empty drums are found, they must be completely eradicated, and then repaired and filled with matching putty for repairing, or cement mortar with the same proportion as wall mortar should be used for repairing and filling according to the same construction method of the wall to ensure that the coating is uniformly absorbed and free of marks. Wall cracks seriously affect the decorative aesthetic properties of the coating. It was found that the application of cracks was filled with fillers to fill and repair, and the larger hollow cracks could be repaired with mortar before troweling.
3, wall floating sand, lime sand need to be removed
Before painting, use a spatula or spatula to scrape it off again or remove it with a wire brush, or use a bristly bamboo broom to remove floating sand. Walls with trachoma, pits such as scaffold holes, air-conditioning holes, window covers, and pipeline installations are left without defects and need to be treated with the same materials and construction methods as the wall base. This is often not noticed during construction. However, after the diatom mud is found on the wall, it is easy to find that the flowers are not in harmony, which seriously affects the decorative effect.
4, polished base plaster plaster marks
The uneven lap pattern of the substrate will affect the aesthetic appearance of the decoration and must be smoothed with a sander before construction.
5, wall iron nail head
Before construction painting, nails should be cut out to expose the wall, and then the nail heads should be treated with antirust paint.
6, the wall alkalinity must be less than 10
After the general new wall is coated with cement mortar, the alkalinity in the wet state is 14, and the PH value can be reduced to 8 after curing for about one month. The wall surface can be wetted with clean water, and then the wall can be adhered with a precision pH test paper for several seconds. After the test PH value.
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