There are bubbles on the wall when the weather gets warmer. Is there any water in it?

Causes of wall blistering:

(1) The base is wet or wet. The moisture at the grass-roots level is too high, and the pressure generated when the moisture diffuses outward makes the paint film bulge, thus generating gas;

(2) Gypsum powder, talcum powder and Shuangfei powder are the main putty, which expands when it meets water, resulting in bubbles on the wall, especially on the outer wall;

You can turn on the fan to blow dry at home, and then put some dehumidifying bags in the corner. This method will have a good effect.