For more help with this issue, see water stains on the ceiling: leak or condensation, wall leak emergencies, our emergency leak detection overview, and what to do when water drips through a light fixture.
Supply Line Break Above
A split hot or cold supply line in the ceiling space sprays pressurized water into the cavity, soaking insulation and drywall until it breaks through. The drip you see is the overflow — far more water hides above. We trace the spray's origin acoustically and mark it precisely.