Causes of moldy and odor.

The basement is a relatively special environment, and its humidity is formed under the common conditions of air humidity and underground moisture, which is the most important factor, which is why the basement is more humid in the same weather.

Most of the damp and mildew on walls and ground comes from groundwater. Buildings are in contact with the ground. There are dense pores and gaps in concrete. A large number of water molecules enter and gather together through capillary action. The physical phenomenon fills the pores and penetrates into the wall. And the ground surface, and continue to spread upward and return moisture to the room, causing dampness, mildew, peculiar smell, etc. on the wall and the ground. There is no obvious water outlet for the permeable moisture, and it slowly spreads upward through the wall, so it touches the ground. The root of the wall is more serious, and the impact is reduced as the height increases.