As temperatures drop and humidity rises, your attic can quickly become a hotspot for mold. Left unchecked, it can damage insulation, weaken your home's vital structures, and impact indoor air quality.

Q: I bought my house in 2008 (built in 1977) and was told by home inspector there was some mold in the attic due to no bathroom vent in second-floor bath. Had a vent put in immediately. I recently ...