I watched an episode in which Tom said that the kraft facing on an insulation batt was to be on the heated side which is what I always thought. Now what I thought he said but not sure is that if you live in a climate that the outside is hot more than it is cool then the heated side is the outside. I live in south carolina where it is hot, but I had asked many people and they actually said, after thinking about it that they arent sure. In my line of work I see alot of mold on the ceilings. Is that a possible reason why? I hope someone has a real answer to this.