Does the entire ceiling paint need to be removed or just the parts where its peeling off? Then what do I have to do after I remove all the paint that’s peeling?
Remove only the loose paint, leaving the good areas alone. The affected areas will need priming then some patching can take place to hide the damage. In this case patching is filling the affected areas with a good patching compound then sanding smooth, retexture to match the surrounding area if your ceiling has a texture. Make sure to prime the repairs before painting.
Does the entire ceiling paint need to be removed or just the parts where it's peeling off?