Where should I put the vapor barrier in my basement?

Not to be confused with a vapor barrier—which is placed on the warm side of the wall just in front of the insulation and behind the drywall— a moisture barrier goes against the basement wall and behind the insulation and framing. The best option for insulating a basement is to use spray foam insulation.Click to see full answer. Simply so, should you put a vapor barrier on basement walls?A basement vapor or moisture barrier is installed during the new construction of a home or the remodeling of a basement. The material is stapled to the frame of a basement wall before it is finished with plaster or drywall. A vapor barrier is also helpful to keeping a basement insulated and warm.Likewise, how do you install a vapor barrier in a basement ceiling? Placing a Basement Vapor Barrier Over Exposed Bottoms of Overhead Floor Joists Forming the Basement Ceiling. One option for a floor air/vapor barrier is a polyethylene [plastic] sheet placed over the floor joists and sealed to the wall vapor barrier. In respect to this, should you put plastic on basement walls? Visqueen on Walls A common question people have when finishing a basement is: “Should I use visqueen or plastic sheeting on one side or the other of the framed basement walls?” The answer is no. Plastic will keep moisture from moving through the wall.What type of insulation should I use for my basement walls?The best way to insulate the interior side of a basement wall is with foam insulation that is adhered to or sprayed directly on the concrete. Any of the following insulation materials are acceptable for this purpose: closed-cell spray polyurethane foam or either XPS, EPS, or polyisocyanurate rigid foam.