The bath fan is causing serious hidden mold in attic; venting directly into attic area. Basement also has a humidity problem that is adding to mold problem in attic as air moves through the home by way of stack effect.


Air seal attic with spray foam and insulate with blown in cellulose. Install Sanidry Dehumidifier in basement.

Improperly vented bathroom fan causing mold in attic.
Air seal the bathroom fan vent pipe and surrounding top plates in attic.
Insulate attic with blown in cellulose R-49

“Keeney Home Services did a very thorough & professional job for us. They removed all our attic insulation, sealed everything, & reinsulated. We were impressed with their attention to detail.”

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