Analysis of alkali return, watermark, blistering, mold on both sides of the wall at the door of the

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.

Where does the water seepage come from in the corner of the outside of the bathroom or at the door of the bathroom? Which way should it be governed? >>>More

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.