1 on the interior wall between the heated and unheated portion of the basement i would not use with a vapor barrier.
Vapor barrier for basement concrete walls.
It s advised to run a vapor barrier just to make sure you don t get any moisture issues after finishing.
If you have a framed wall that is adjacent to a concrete foundation wall where the vapor barrier is next to the drywall in front of the studs the fiberglass insulation gets wet and becomes a breeding ground for mold.
Also be sure to use treated lumber for the bottom plate on the wall framing.
The vapor barrier is sealed to the concrete wall at the bottom with some sort of seal and nailed directly to the concrete.
Because of this you ve likely asked yourself.
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.
The other option is to set the 2 4 wall framing in 4 from the masonry or concrete basement walls and use just the vapor barrier on the insulation facing toward the living space.
Most jurisdictions require a 4 mil plastic sheet vapor barrier for basement walls against concrete.
The construction of the wall for instance is vital to the use of a vapor barrier.
Unlike cellars basements need to be dry comfortable environments that effectively keep out any possible contaminants.
Should i install a vapor barrier in my basement.
Very hot and humid climates may benefit from an exterior vapor barrier that keeps outside humidity from penetrating into walls.
The main concerns are condensation and drying potential.
That is if the studs are going to touch the concrete wall.
Below grade walls and floor slabs transmit ground moisture through concrete walls or slabs.
The builder insulated the upper 4ft of the basement wall with a pink batt style insulation which is held to the wall with a vapor barrier.
By the way you need a thermal insulation on top of that too.
A vapor barrier against the concrete surface is generally recommended before wood framing or flooring materials are installed.