Vapor Barrier Basement Floor

Acoustical underlayment with vapor barrier for luxury vinyl flooring 72 model qwlv360.

Vapor barrier basement floor. Our moistureblock is a 6 mil polyethylene film vapor barrier that is used during the installation process with floating laminate luxury vinyl planks and engineered wood floors. This is asking for trouble especially with a full bathroom which generates a lot of humid air. One of the reasons those old basement floors were like that was because they had no vapor barrier beneath them leaving an easy path for water vapor from the soil to migrate into the slab assuring that the cold clammy damp feeling never went away. They are most commonly made of vapor retardant paint treated paper or foil or polyethylene plastics but there are other options.

Vapor barriers are materials that combat moisture diffusion through walls ceilings and floors. That way you have the extra layer of protection and don t have to worry about potential leaks. Air flows under the floor allowing the moisture to dissipate without having to remove your flooring at each occurrence of moisture buildup. Rigid foam board on the interior like you have is the ideal insulation.

No need to bother with large fold out low quality off spec construction grade films which can be bothersome and hard to use before the floor is installed. And dampness is only part of the problem water vapor moving through a concrete floor can. The short answer is.