Mold spots on the bathroom ceiling
Urgency
3/5
Depends on what you find — start here$100–$900Typical repair cost
Likely causes, most common first
- Steam + weak ventilation condensing on the coolest surface — surface mildew, the common case
- Cold-spot condensation above (missing attic insulation patch)
- Leak from above masquerading as mildew (check the pattern: rings = leak, speckle = mildew)
Do this right now
- Speckled surface mildew: clean with appropriate cleaner, then fix the CAUSE — fan runtime (timer switch) or fan upgrade
- Ring-shaped stains or fuzzy growth: treat as a leak investigation first
DIY or call a pro?
Recurring mold after cleaning means the moisture math hasn't changed: that's ventilation work, insulation patching, or a leak hunt. Growth larger than a few square feet, or inside walls, is remediation territory — don't paint over that.