Well what I found was not moisture, which I was actually looking for and expecting to find! I found a cold spot on the ceiling in one of the rooms in this home. It was about three feet out from the wall and in the middle of roof. What had I found? I found an HVAC air duct supply register that had been covered over when the home was built and the drywall was installed. The drywall contractor just failed to cut the hole out for the register and covered it!
Fast forward seven years…….. The home inspector that referred the buyer to me for the EIFS inspection noted that the room was a little warmer than the other rooms, but they failed to notice that the room had no HVAC supply register in the ceiling. That is why it was warmer than any other room in the home. It is a fairly easy fix but I still chuckle when I think about how many years went by and nobody ever noticed that the room did not have a supply register in the ceiling.