Roof Leak After Heavy Rain

Heavy rain can force water under weakened shingles or into small gaps around roof penetrations. Common culprits include worn flashing, cracked vent boots, clogged gutters causing overflow at the eaves, or ice-and-water shield issues at valleys.

Because water can travel along rafters and decking, the ceiling stain location is not always where water enters. Fast assessment prevents insulation saturation, drywall collapse, and mold.

• Look in the attic during or right after rain (use a flashlight) to trace wet wood or dripping—do not step on ceiling drywall.
• Check for damp insulation and follow it upslope to find the likely entry area.
• Inspect gutters/downspouts from the ground for overflow marks and heavy debris.
• From outside (ground view), look for missing shingles, damaged flashing, or loose vent boots near the leak zone.
• Mark the ceiling stain edges with pencil to track whether it’s expanding after each rain.

1. Place a bucket and protect flooring; poke a small hole in a bulging drywall bubble to relieve water pressure only if safe (avoid electrical fixtures).
2. Run fans/dehumidifier to dry the area and reduce mold risk.
3. If you can safely access the attic, place a tarp or plastic sheeting beneath the drip to direct water into a container (temporary only).
4. Document with photos for insurance if storm-related.
5. Schedule a roofer—proper flashing and shingle repair is the permanent fix.

• If water is actively dripping, staining is spreading, or drywall is sagging.
• If the leak is near a chimney, skylight, or valley (complex flashing zones).
• If you suspect gutter overflow is backing water under shingles.
• If the roof is older or you’ve had repeated leaks after storms.
• If moisture is near recessed lights, ceiling fans, or other electrical components.