What is the reason for moldy mold in the interior wall corridor of the indoor bathroom of the newly

Mould is caused by organic matter in contact with water. Most of the reason is the weather, the recent rain in the south is heavy, as long as the ventilation is maintained frequently, it can be effectively controlled, so that the moisture can be discharged. There is no sunlight, as long as it is not cloudy, open the window to keep it ventilated, reminding you that "the day when the south wind blows, is the day of dehumidification."

Here are a few affordable and effective ways to dehumidify:

Quicklime is a great way to remove moisture from your home. 1 kilogram of quicklime can absorb about kilograms of moisture in the air, which is a good and simple adsorbent. Wrap quicklime in cloth or sacks and place it all over the room to keep the indoor air dry.

There are also special products for mold removal, you can go to the Internet or go to your local building materials market to see. The above is just a personal opinion, I hope it can help you.

There may be water leakage, it is recommended that you first find the property to suppress, test the water pressure, if the water pipe is fine, then you find another leakage point

It may be too humid, so it is better to ventilate and breathe, and it will be better to have a conditional selling point dehumidifier.

Maybe it's too humid, ventilate, or put some charcoal.

Waterproofing is not done! It is not the wall of the shower, if it is, the wall is waterproof.

I think the biggest reason is that it's too wet, right?

Let's install a dehumidifier.