Why is the basement at home damp-proof before, but it is still damp and moldy now? Is there no cure?

Of course, it's just that you didn't buy anything good before.

About the reasons of damp basement:

Whenever the indoor temperature is higher than the wall temperature, the wall may show signs of moisture. In fact, this is mainly because the insulation of the wall is not done well. Because the wall does not well separate the indoor temperature from the outdoor temperature, the temperature difference is very large, resulting in moisture and humidity. Of course, it depends on the weather. No matter how good the wall is, it can't be the best. When the climate is too humid, it will also have an impact on the room.

There are several possibilities for mildew:

1. When decorating, the wall is not completely dry, so we have to shovel it off and redo the wall in spring.

The water pipe buried in the wall is leaking. Find the leak and repair it.

3. There is no insulation layer on the wall, so the warm indoor air will condense into steam when it meets the cold wall, and it can be added as an insulation wall if conditions permit. If not, you can apply a waterproof coating on the wall, which will have a certain effect after being diluted with two-component oriental rain rainbow.

Moldproof during decoration:

When the basement is decorated, the wall paint mildew inhibitor is added to the wall, mixed with the putty powder of the wall evenly, and then pasted on the wall. At this time, the wall will form an invisible transparent film, and the moisture in the air will not be absorbed, but will only stay on the surface of the wall and then evaporate, so that the wall will remain dry and will not be moldy again.