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Anonymous users2024-01-241. All redo waterproofing, note: the vertical surface is slightly higher, to form a complete membrane with the ground, generally or polyurethane, roof waterproofing is not once and for all, after a few years to redo once, the only way to ensure the quality of waterproofing is to find a professional waterproof company.
It is possible that there is a leak in the water pipe laid in the wall or in the ground, and the amount of water leaking is not visible in the water meter.
If you don't make any changes during the warranty period, the construction unit is responsible, otherwise you have to spend money to repair it.
Hello, the toilet can use water normally, because the kitchen and bathroom are not the same sewer main, so the sanitation can use water normally.
It is not the problem of water ingress on the 4th floor, which can be certain, because there is a problem when only using water on it, so it is related to drainage, depending on the structure, you should know if you try to use water, more information, better advice, free concrete waterproof leakage water repair technical consultation, free of today's repair, tomorrow's leakage, annual repair, every year leakage troubles.
This question should belong to the problem of building a house, you can ask the property, it should be from the property.