If it seems I write a lot about moisture-related issues, then you’ve been paying attention. Moisture is Enemy No. 1 for homeowners, whether natural or man-made.

Today, I’d like to address an (unfortunately) very common man-made moisture issue that I see on a regular basis: bathroom vent fan ducting that discharges directly into the attic. I was just in a home on Orcas Island where I encountered this issue. I had a strong suspicion that this lack of ventilation was creating an environment where apparent mold-like growth I noted could thrive on plywood sheathing.

If you have questions or comments about ventilation issues or home inspections in general, tweet me (@AIHomeInspect).