What should I do if the walls at home are damp and moldy in spring (south wind)?

The general prevention method is to strengthen indoor ventilation; The second is to reduce indoor humidity.

1. Now remove the moldy wall, brush a layer of 108 glue first, then blow putty and brush latex paint.

The walls at home are often damp and moldy: because the moisture in the outdoor and indoor rooms is in the walls, if the water content is too high, it will become black spots and moldy. When it rains outside, the rain goes into the wall. In summer, the sun is very hot, and the heat sucks the indoor water vapor into the wall, but it can't be discharged. If it rains again,

The water outside went into the wall again. Over and over again, many walls will become black spots and moldy.

Treatment: First shovel the wall paint to the bottom of the ash, and then spray the nano waterproof agent twice (not very expensive). Then repaint your favorite paint oil. In this way, I am not afraid of turning black and moldy for at least ten or eight years.

Nano-waterproof agent function: (crystal effect) isolate external wall moisture and prevent indoor moisture from entering.

It's cheaper to buy a bottle of mildew remover.

I used Shenzhen Juyuan biological bactericide, and the effect was quite good.

And it is a green product, non-toxic and pollution-free.

3. If it is in southern cities, especially Guangzhou, this problem is very common, especially when the humidity is once every five years this year, there is no need to shovel and brush such a big project unless there are bubbles on the wall. Even if the primer is added before brushing, the situation will appear again when it is wet next year.

It is suggested that if it is only moldy, it can be removed by sucking it with a vacuum cleaner with a brush after the weather is dry (or completely dried by a fan), but remember not to wipe it with a wet cloth or not completely dry it! This is the simplest and most economical method. I suggest you try it yourself. . .