Plastic Vapor Barrier Basement Walls

Polyurethane sheeting is a typical vapor barrier that contractors use to prevent moisture from penetrating the walls of a basement.

Plastic vapor barrier basement walls.

You should then use fiberglass insulation that has a vapor barrier between the studs with the vapor barrier facing in toward the living space. The cool surface is the sheathing assuming no exterior insulation. 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. The standard installation of a plastic vapor barrier is between the studs and the drywall but there are some exceptions to this.

Basement vapor barriers and best methods for insulating basement walls vapor barrier in your basement walls basement wall vapor barrier system in use crawlseal to waterproof your walls how to install a basement vapor barrierfixing moldy basements vapor barriers can be a bad ideahow should i finish an existing basement continue reading. A vapor barrier is also helpful to keeping a basement insulated and warm. 1 on the interior wall between the heated and unheated portion of the basement i would not use with a vapor barrier. In exterior walls that are below grade like basement walls.

Plastic on the outer surface of a wall in cold weather could cause problems. The main concerns are condensation and drying potential. In winter the dew point of the interior air is typically about 50 f assuming an air temperature of 70 f and a relative humidity of 50. The material is stapled to the frame of a basement wall before it is finished with plaster or drywall.

When the mold grows it will spread to everything around it studs drywall etc. If water vapor diffuses or infiltrates into the wall cavity and finds the cool surface moisture problems can occur. Basement remodeling ideas from tv.