Mike writes from Mound Valley, Kansas: "I recently installed wall insulation with the paper facing to the outside (not knowing that it mattered). I have found out that the paper should be facing to the inside in my area (S.E. Kansas). The drywall is installed and finished now. How big of a mistake did I make?"

Answer: The idea is that the vapor retarder be installed toward the warm-in-winter side to keep moisture/condensation out of the fiberglass insulation. Essentially, the vapor retarder slows the movement of humid air to a cold surface where it could cause condensation.

Unfortunately there is no easy fix for the situation you describe.