vapor barrier

noun

plural vapor barriers
: a layer of material (such as roofing paper or polyethylene film) used to slow 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
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
The vapor barrier below the house, which helps prevent moisture buildup and mold, was cut up, and there were no air vents to allow circulation. Nick Rosenberger, Idaho Statesman, 13 Jan. 2025 On the other hand, if the moisture is moved away from your feet (i.e. by a moisture-wicking synthetic sock) and gets trapped under the plastic shell of a ski boot or the vapor barrier of mountaineering boots, the cold from the outside can really bring down your boot temp. Joe Jackson, Outside Online, 9 Jan. 2025 Most crawl spaces need a dehumidifier and vapor barriers installed to keep humidity to a minimum before they are closed up. Brandee Gruener, Southern Living, 28 Dec. 2024 Select the four-season option, and this tiny house will come with fiberglass insulation and a vapor barrier in both the roof and the flooring. Laura Kristine Miller, Better Homes & Gardens, 26 Sep. 2023 Sometimes a fourth layer is added to serve as the vapor barrier. Heidi Wachter, Treehugger, 14 July 2023 Giroux noticed that the crawl space had been added without a vapor barrier. Vivi Smilgius, BostonGlobe.com, 11 Apr. 2023 Northrop also remarked that fuel stabilizers establish a vapor barrier. Matt Crisara, Popular Mechanics, 6 Mar. 2023 To build, the study said, the county would need to maintain a clean soil cap, install a vapor barrier under the jail and limit any exposure to groundwater. Courtney Astolfi, cleveland, 13 Sep. 2022

Word History

First Known Use

1938, in the meaning defined above

Time Traveler
The first known use of vapor barrier was in 1938

Dictionary Entries Near vapor barrier

Cite this Entry

“Vapor barrier.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/vapor%20barrier. Accessed 19 Jan. 2025.

Last Updated: - Updated example sentences
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