Water leaks originating from a ceiling are typically caused by either exterior weather events or internal plumbing failures. Common culprits include damaged, missing, or curled roof shingles, compromised chimney flashing, clogged roof gutters overflowing against exterior walls, burst or leaking supply pipes running through the attic, leaking toilet wax rings from upstairs bathrooms, failing refrigerator water lines, or severe condensation sweating on uninsulated HVAC air conditioning ducts. Verification: Check upstairs plumbing lines and attic roof decking during dry and wet weather to pinpoint the exact source of water entry.
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