Diane writes from Cedar, Minnesota: "I just put new R-19 insulation in my basement and put 4 mil poly over it as a vapor barrier. I'm noticing a lot of moisture collecting between the poly and the insulation. How can I correct this, or will adding sheetrock usually solve the problem?"

Answer: We do not recommend the use of poly as a vapor retarder in a basement assembly. The moisture content of the area is generally too high. We recommend the use of Kraft-faced insulation in basement applications.

To fix your situation I recommend cutting the poly so the moisture can escape before applying the gypsum board.