Water leaks coming from a ceiling are typically triggered by exterior weather or internal building system failures. Frequent causes include damaged or missing roof shingles, compromised flashing around roof penetrations, blocked gutters, burst or leaking water supply pipes running through the ceiling, leaking bathtub or toilet seals from upper bathrooms, failing washing machine hoses, or massive condensation accumulation on uninsulated HVAC ductwork running through unconditioned attic spaces. Verification: Inspect attic spaces and upper-floor plumbing fixtures to determine the exact water source.
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