I discovered in the bathroom of the basement : the vapor barrier is installed directly on the concrete wall (between the concrete wall and the insulation) ... then the insulation ... then the dry wall (backer-board tiles) ...
I found that the insulation is wet, when I removed some of the insulation, I found condensation on the vapor barrier.
I know that the vapor barrier should be installed between the drywall and the insulation (which is not my case).
My question is it OK to leave it like that ?
Should I replace the wall, the insulation and install the vapor barrier correctly ? if yes .. should i remove the old vapor barrier installed on the concrete wall or I can leave it ?