Ask for advice on the problem of water leakage in the bathroom, is there an expert to answer?

According to your description, the leakage in the bathroom is a pipe leak, and since there is no way to view your site, you can only guess: (1) whether your original leaking pipes have been completely removed, and if not, prove that there is still residual water in the pipes under your ground, which will gradually penetrate through the floor to the lower floor over time. Because the ground contains water and does not come into contact with the air in a large area, the evaporation is very slow, which causes the roof of the downstairs and the walls involved to be in a state of moisture for a long time, which takes time to dry slowly.

If the pipes have been removed, it will take time for the water in the original ground to dry.

The first thing to make sure is that your bathroom structure is leaking, and the water seepage point should be at the entrance of the bathroom.

Due to the water seepage of the structure, even if the water pipe is repaired, it does not mean that there will be no water seepage, but the key is whether the waterproofing of the bathroom floor is in place. If the waterproofing of the floor is in place, as long as it does not leak through the waterproof layer of the floor, it will not seep into the downstairs.

Due to the special environment of toilet water, if the waterproofing of the bottom plate is not in place, the possibility of water seepage is great. It is estimated that the structural leakage inspection was not carried out before the waterproofing, or the leakage prevention inspection was not done in place. In addition, the later waterproofing was not done well, resulting in the current situation.

The following measures are recommended:

1. Observe or wait for a week or two to see if the water stain area on the wall downstairs is shrinking, if it is shrinking or completely dry, it proves that there is no problem. After the water penetrates into the wall, there will be a slow drying process under natural ventilation due to the water absorption of the blocks or concrete itself. The prerequisite for this observation is that your restroom is in normal use.

2. If the wall remains the same or expands after observing for a period of time, it proves that the waterproofing is not done well. The bottom plate needs to be re-waterproofed.

3. If it is the second case, you need a professional waterproof master to help you find the leakage point, and then plug the leakage point and then repair the waterproofing OK. The plugging of structural leakage is generally grouting and plugging, and then the irrigation test is qualified. It should be noted that we must find a responsible master to do this work, if the structure is not blocked, only waterproofing, the hidden danger of leakage will still exist.