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Flashing Leak Troubleshooting Guides
Published FixGraph guidance for diagnosing and responding to flashing leak.
Matching published guides
Choose a guide that matches the service, equipment, and conditions you are seeing.
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Roof flashing leak at junction: What to Check and What to Do Next
A leak at a roof junction is often caused by failed or incorrectly layered flashing where a roof meets a wall, chimney, dormer, vent, or another roof plane, but water can travel from a higher point before it appears indoors. From inside, map the stain or drip without opening the roof; from the ground, use binoculars to look for displaced shingles, missing step or kick-out flashing, open laps, or damaged flashing at the junction.
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Roof flashing leak rain: What to Check and What to Do Next
A roof flashing leak that appears during rain needs source tracing and a weather-safe repair, not a bead of interior caulk or a guessed patch. From the ground, document where the ceiling or wall becomes wet, when the drip starts, and whether the location is near a roof-wall intersection, chimney, skylight, plumbing vent, HVAC curb, valley, or gutter.
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Roof flashing leak with rust or a gap: What to Check and What to Do Next
Rust, an open lap, a gap, loose fastener, or failed seal at roof flashing can let water behind the roof covering or into a wall, but the visible stain inside is not always directly below the entry point. From inside, document the stain or damp area only where access is safe; from the ground, look for rust, open seams, loose flashing, damaged roof covering, missing caulk, debris, and a gap at a wall, chimney, skylight, or pipe penetration.
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Roof flashing leak: What to Check and What to Do Next
A roof flashing leak is a water-intrusion problem at a roof-to-wall joint, valley, chimney, vent, skylight, or other penetration, but the wet spot inside may be displaced from the entry point. From the floor or a safe window, record the exact ceiling or wall location, when it appears relative to rain and wind, visible moisture or staining, and nearby gutter or downspout behavior.