1, paint layer is empty.
Treatment method:
Knock out the empty drum and repaint the wall. Pay attention when painting, and wet the wall the day before painting. The thickness of a painting should not be too thick.
2. When the wall is painted, the indoor humidity is high, which leads to the moisture regain, which leads to the coating of the wall falling off in the later construction.
Treatment method:
Need to remove the coating, indoor ventilation, indoor humidity is not too high before coating construction.
3. Because the wall is in a humid environment for a long time, for example, there is water on the other side of the wall for a long time, or there is a hole in the wall, and it gets wet after it rains, resulting in peeling of the indoor wall.
Treatment method:
Find out where the water seeps on the other side of the wall, shovel off the paint layer, fill the hole with cement mortar with higher label and brush it with paint. The inner side of the post-treatment wall is also treated by a method similar to 1.
4. Foundation settlement leads to cracks and spalling.
Generally, a new house will have a process of foundation settlement in a year or two. When the wall is stretched in the process of settlement, it will cause cracking or peeling of the wall. In the process of foundation settlement, don't try to repair the wall locally. It is best to wait until the settlement period of 1-2 years is gradually stabilized before repairing the wall.
When the developer delivers the house, the wall surface is leveled with plain ash, and when the workers brush the wall, they must shovel off the grass-roots plain ash and brush the primer again. If workers don't clean up the base in the decoration, peeling and cracking will occur on the wall for a period of time after painting latex paint.
Some decoration companies cut corners when decorating owners, and the ratio of raw materials is unreasonable. For example, there is too much water in the paint.
Solution:
1. Small area peeling and cracking. Shovel off the peeling part and the surrounding wall skin, and fill it with the same color paint; If the decoration is made of latex paint, it is best to brush the glue treated for the second time, which can reduce the local and overall color difference.
2. In case of peeling and cracking in a large area, you can only shovel all the paint putty on the wall. Brush the cracked base with white latex, stick dacron cloth and putty, dry and polish with sandpaper, and then brush the paint again. If the crack is deep, this part should be plastered separately.