The upstairs bathroom floor and walls are dry, and the downstairs ceiling is leaking, what is the ca

Yes, but it should be with your consent, and it is okay to ask the upper floor to restore your zenith to its original state or give you some compensation. Upstairs and downstairs should cooperate, you have to cooperate!

It should be your home, if it was not leaking for a long time before, and it was only recently built, the pipe leakage may be relatively small. If it is a new building, you can test the water in this way: all the pipes are water, 1 two days later to see if there is a leak downstairs or the latest leakage, if not, it is not a problem with the pipeline! >>>More

If there is no problem with the water inlet pipe in your home (it has been suppressed and tested), you should also pay attention to whether the drainage pipe may leak. If there is no problem with the plumbing system, all tile joints can be treated with "cologne" grit adhesive.

If it is upstairs bathroom floor wall seepage, do waterproofing, brush waterproof paint or membrane waterproofing, waterproof paint on the bathroom wall to brush high, can reach 1.8 meters best. There is also a dark place where the water and water pipes are broken (the pipe may be pierced when the pipe is dredged, and the water pipe joints are not connected during construction will seep water), and the surface can not be seen. If there are traces of water when it rains, check to see if it is water seeping into the exterior wall. >>>More

It's a problem with aging pipes. If your family moves, it's your family's responsibility.