Wont extruded rigid foam poly trap moisture?
I contacted ownes corning about insulating my below grade basement walls. No water problems whatsoever.
I mentioned, I was going to use their fanfold ext rigid polyestrene and attach it to the concrete walls, then add framing, then fill will batt insulation, then sheetrock.
Rep told me, whomeever gave you that advice is not serving you well,, and we are asking for a mold problem, since the foam board will trap the moisture.