vapor barrier

noun

Definition of vapor barrier

  1. :  a layer of material (such as roofing paper or polyethylene film) used to retard or prevent the absorption of moisture into a construction (such as a wall or floor)

Circa 1941

First Known Use of vapor barrier

circa 1941

Learn More about vapor barrier


Seen and Heard

What made you want to look up vapor barrier? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

to cast off or become cast off

Get Word of the Day daily email!