No, a ceiling leak will never truly dry on its own in a way that prevents long-term property damage. While the visible surface water stain might eventually evaporate when the active leak stops, moisture remains trapped inside the insulation, wooden framing joists, and drywall cavity. This hidden trapped moisture creates ideal conditions for aggressive mold growth and structural wood rot within 24 to 48 hours. Verification: Cut open the damaged ceiling section to inspect internal framing and dry the cavity thoroughly with industrial fans.
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