If you notice a water stain on your ceiling, your first instinct may be simply one of annoyance. It’s ugly and seems to come out of nowhere. How are you going to cover that up? Maybe it will just go away when it dries.
We want to tell you how serious ceiling water stains can be. You should never ignore them. And you shouldn’t focus on what to do to cover it up, because the source of the stain may continue to be a problem, and the water damage might be enough to weaken the flooring—and that’s not something that a bit of plaster can fix. You don’t want to wipe the stain from your mind only to have part of the ceiling cave-in months later, possibly bringing down part of the room above it!