The bathroom door in the room is seriously moldy on both sides What is a good way to solve it

It should be caused by water vapor during bathing, because water vapor will form water droplets flowing down along the wall after being cold, and when encountering wooden door panels, it will be absorbed by the door panel and then moldy.

At the door of the bathroom, there is a meter-high place where the wall brick and the cement wall are in contact, and the width is only 2 cm, which is likely to be the cause of the leakage of the water supply pipe, please ask the plumber to help you solve it.

First of all, if the wall has been waterproofed, it is necessary to consider that the breathability of the wallpaper on the outside of the toilet is too poor, and the moisture is not volatilized, which leads to the production of bacteria, so it will peel. The second is the waterway pressure, which can eliminate the problem of the waterway without continuous pressure loss. It is also possible that the sand layer of the tiles is too thick, the ground is too wet, and the tiles are not dried out, and when the temperature rises, water vapor will come out under the tiles, which will spread along the corners of the wall, causing the wall to peel.

Is there underfloor heating at the door? Look where the water comes from.

It should be, if you blister for a long time, you can use a waterproof membrane to paste it.