Stains at bath fan? Dont call a roofer (its a building science problem) @StructureTech1
Stains at bath fan? Dont call a roofer (its a building science problem)  @StructureTech1
Uploaded April 2025 | Updated September 2026, 1 week ago
As home inspectors, we often find stained ceilings around bathroom exhaust fans. We also find a lot of stains in the attic where the bathroom exhaust fan terminates at the roof.

While the knee-jerk reaction for most homeowners is to call a roofer when a stain shows up on their ceiling, this type of staining is rarely the result of a roof leak. This is typically the result of condensation.
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Stains at bath fan? Don't call a roofer (it's a building science problem)

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