Vapour Barrier in basement
We are planning to finish our basement and the work has begun. The walls were already up when we moved in. While removing drywall in one spot for the fireplace I found that although the walls are insulated, there is no vapour barrier. We have not had a problem with moisture as of yet but behind the insulation there is frost on the concrete wall. I am wondering if I should rip out all the drywall and put up a barrier or will it be okay as is. I would rather not rip it all out as this creates more work and more expense.