Yeah! A golden photo ! Finally able to make the invisible visible in this photo of a home in Vernon Hills we captured an exact path of moisture from the bathroom fan creating condensation with feeds mold. Years later we see a perfect mold pattern. Green Attic Insulation focuses on something no one else does, besides making your home more comfortable, we focus on the healthy air quality of the living space. We highly recommend bath vents to be safely extended to the exterior.