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, Philly.com, "Solve a wet basement by fixing the problem, not managing it," 1 May 2018 The green material on the east side and other parts of the arena is an air and vapor barrier, said Mortenson spokeswoman Bridget Kraus. James B. Nelson, Milwaukee Journal Sentinel, "Milwaukee Bucks arena is 80% done - and that weird green color won't be visible for long," 30 Jan. 2018 There are sections of the main entrance area - such as a band above the glass about half way up - where the green vapor barrier is already covered by the final finish materials. James B. Nelson, Milwaukee Journal Sentinel, "Milwaukee Bucks arena is 80% done - and that weird green color won't be visible for long," 30 Jan. 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.

See More

First Known Use of vapor barrier

circa 1941, in the meaning defined above

Keep scrolling for more

Learn More about vapor barrier

Share vapor barrier

Statistics for vapor barrier

Look-up Popularity

Time Traveler for vapor barrier

The first known use of vapor barrier was circa 1941

See more words from the same year

More from Merriam-Webster on vapor barrier

Rhyming Dictionary: Words that rhyme with vapor barrier

Comments on vapor barrier

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 enclose within walls

Get Word of the Day daily email!

Test Your Vocabulary

Late Autumn 2018 Words of the Day Quiz

  • frosted-autumn-leaves
  • Which is a synonym of yahoo?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

TAKE THE QUIZ
Dictionary Devil

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!