vapor barrier

noun

Definition of vapor barrier

: 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)

Examples of vapor barrier in a Sentence

Recent Examples on the Web The exterior walls are reparged and a vapor barrier added. Kevin Brasler, Star Tribune, "Wet basement? Try to solve it before you spring for more costly options," 5 Sep. 2020 The exterior walls are reparged and a vapor barrier added. Kevin Brasler, Star Tribune, "Wet basement? Try to solve it before you spring for more costly options," 5 Sep. 2020 The exterior walls are reparged and a vapor barrier added. Kevin Brasler, Star Tribune, "Wet basement? Try to solve it before you spring for more costly options," 5 Sep. 2020 This will produce a vapor barrier in front of your face but keep the chemicals out of your eyes. T. Edward Nickens, Field & Stream, "The Best Clothing, Chemicals, and Sprays to Prevent Tick and Chigger Bites," 13 July 2020 The last Bata bunny boots — actually V.B. boots or vapor barrier boots — were produced in 1992. John Schandelmeier, Anchorage Daily News, "Wanted: A boot that will keep you warm the way old bunny boots did," 11 Jan. 2020 The new system would consist of a grid of plastic tubes set on top of a layer of foam insulation, with a vapor barrier and steel reinforcement mesh. New York Times, "Follow Every Step of a Major Midcentury Modern Renovation," 20 Dec. 2019 If the floor is concrete, the installer will install a vapor barrier to prevent any moisture from seeping up. Charlyne Mattox, Country Living, "How Much Does It Cost To Install Carpet?," 23 Sep. 2019 An unbroken envelope of insulation and vapor barriers from its bottom floor to the top keeps the building air tight. Christopher Mims, WSJ, "Why Your Next Home Might Not Need Any Energy at All," 22 Dec. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'vapor barrier.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of vapor barrier

circa 1941, in the meaning defined above

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Time Traveler for vapor barrier

Time Traveler

The first known use of vapor barrier was circa 1941

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Statistics for vapor barrier

Last Updated

3 Oct 2020

Cite this Entry

“Vapor barrier.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/vapor%20barrier. Accessed 31 Oct. 2020.

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