Had a multi-family building inspection this morning. Temperature was about 25 degrees. The underside of the sheathing was frosted over in the attic cavity. What was strange, for me anyway, was that all of the loose fill fiberglass insulation felt "wet". Can't say that i have ever run into this. The ventilation was good. Looking at the color of the insulation, which was originally white, it appears mildewy(sp?). Has anyone run in to this? Click to Enlarge 41.44 KB Click to Enlarge 66.22 KB