Mary writes from Summersville, West Virginia: "I just purchased a home that the current owner has put new insulation in R13. They installed the insulation with the paper side to the exterior of the home and the insulation to the interior. Isn't that backwards? I thought the paper barrier should face the interior of the room? The walls have not been put up yet and the insulation is still exposed. Should it all be turned around? Also the ceiling was done the same way....should it be changed?"

Answer: Yes, the facing should face the interior or warm side of the room. The only exception is in high humidity areas such as Florida.