Possible sources
- Roof leaks
- Plumbing above the ceiling
- Bathroom condensation
- HVAC condensate
- Past water intrusion that did not dry fully
Before repainting
Painting over a stained or moldy area without addressing moisture can hide the symptom without fixing the condition that caused it.
Trusted guidance: This site uses U.S. EPA mold and moisture guidance and Florida DBPR mold-related-services rules as reference points. If you have health concerns, consult a qualified health professional.