應該比較是滲水. 樓上的熱水管有小裂縫, 從牆壁旁邊滲進來.

Oh man. Those sucks. Water damage is hard to deal with. Some times u have do dry and redo the paint

I have the two drying fans in my units and one humidifier...

do you need to report it to the super?

The building manager asked the technicians to put them there.

hope for the best