If you're installing concrete slabs in a basement or another area of your home, you'll also need to install a vapor barrier ...

Even if a concrete slab is considered acceptably dry ... finish is to be applied is an effective, low-permeance vapor barrier placed directly beneath the slab. If the barrier below the slab ...

Concrete moisture problems and the flooring ... for the warehouse and discovered that there was no vapor retardant underneath the slab, which is common for a warehouse. Says Donnelly, “Unless ...