Damaged Ceiling Paint
Not only is the ceiling paint damaged, the drywall is
damaged also.I wouldn't recommend removing the damaged paint, I
would recommend removing the drywall and installing a new ceiling.
Listen to what I'm saying here, do not paint over the damaged ceiling.
Here's an example of what I'm talking about: let's say that the homeowner decides to scrape off the damage paint, repair the ceiling and then repaint it.
The damage is still there, you're just painting over the damaged material.
Eventually, the drywall will need to be replaced, you're just prolonging the inevitable home repair.
The water damaged drywall, could be dry, but this could still create a problem. When drywall gets wet and then dries out, it can become brittle and over time start to disintegrate.
This means that your ceiling could fall on top of your head. Are you starting to get the picture.
But the biggest problem with this ceiling, would be mold.
If the ceiling remained damp for a while, or if the
mold was already growing on the other side, it will start to work its
way through the ceiling and will soon be visible.
Home Repair Tip: Whenever you run into a situation where the drywall has been damaged, like the picture above, I would recommend removing the drywall, inspect the wood framing for mold or dry rot and then reinstall the new wallboard.