Dictionary.com
Thesaurus.com
Showing results for vapor barrier. Search instead for Vapor+Barrier.

vapor barrier

American  

noun

Building Trades.
  1. a layer of material, as plastic film or foil, used to protect installed insulation by retarding the transmission of moisture from the interior environment.


Etymology

Origin of vapor barrier

First recorded in 1940–45

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Nicholson & Galloway, an exterior restoration contractor experienced with historical domes, repaired cracks in tiles, patched concrete, then layered on new protective materials: a hand-troweled vapor barrier, spray foam insulation, stainless-steel framing, plywood sheathing.

From New York Times • Dec. 22, 2022

Washington’s code also requires a 6-mil vapor barrier for ground covering.

From Seattle Times • Aug. 25, 2022

Another possibility, he says, is that the soil also provides a vapor barrier to help stifle sublimation as well as physical insulation.

From Science Magazine • Aug. 16, 2017

He had questions about a vapor barrier because the contractor he was thinking of hiring suggested one.

From Washington Post

The experimental uniforms, of which 150 have been tested, work on the "vapor barrier principle."

From Time Magazine Archive

Vocabulary.com logo
by dictionary.com

Look it up. Learn it forever.

Remember "vapor barrier" for good with VocabTrainer. Expand your vocabulary effortlessly with personalized learning tools that adapt to your goals.

Take me to Vocabulary.com