New answers tagged ice
Could the melting ice water have caused a permanent leak to have developed? (my emphasis) Leaks generally don't repair themselves. Since there is evidence of a leak, it is very likely this will recur. This means that the leak needs to be actively investigated and fixed to prevent further damage. You downstairs neighbor will probably get someone to ...
the ice froze some water standing in the pipes and that created a clot, so when more water came through the pipes, it overflowed (overflew??)
could be the cold has shrunk something, maybe rubber isolation, and the water was able to go around it (something like that caused the challenger explosion) could be the cold has cooled down the neighbours ceiling and the moisture in the room condensed there, like when you use air conditioning
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