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It must be the construction party. When reinforced, the hanging plate will be pulled to the surface of the board with iron wire, and water will seep. It needs to be waterproofed again.
It is possible that the connection of the sewer pipe connected to the washing machine is not completely sealed, resulting in water leakage. The water flows downward, so in general, when the leakage is not particularly serious, there will be no traces on the ground on the third floor, but there will be traces on the walls and ceilings on the second floor.
Water leakage phenomenon is not easy to find, it is caused by multi-directional faults, first to open the downstairs ceiling, check whether the drainage pipes are damaged, in view of the upstairs drainage pipes, water supply pipes, embedded pipes, etc. can be judged.
The leakage of water from the roof downstairs must be a plumbing problem of the upstairs residents, and the upstairs residents should be responsible. >>>More
It must be that the waterproofing is not done well or not at all. >>>More
Try to cooperate, and strive to have a proper solution, the downstairs resident leakage should be closely related to your home, if the long-term water leakage is also very bad for your home.