We just purchased a home with a converted carport. It was bricked in like the rest of the structure. There was carpet on the concrete slab and paneling on the walls. Our plans were to pull carpet up and sheetrock the walls. After pulling the paneling off, I found sheathing and insulation that had previously been wet. There are areas where the moisture barrier is still in tact, others where I was able to just pull out by hand. My question is how can I replace the moisture barrier in this wall? It seems it would be extremely difficult to do from the inside if not impossible. Can I have foam insulation sprayed in? Any help will be greatly appreciated. Thanks!