Meanings
nounvapor retarder (plural vapor retarders)
plural vapor retarders
- A layer of material or a laminate used to appreciably reduce the flow of water vapor into a roof assembly.
Synonyms: vapor barrier
Synonyms & antonyms
nounA layer of material or a laminate used to appreciably reduce the flow of water vapor into a roof assembly.
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APA
vapor retarder. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/vapor%20retarder
MLA
“vapor retarder.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/vapor%20retarder. Accessed November 5, 2026.
Chicago
WatkinsX Dictionary, s.v. “vapor retarder,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/vapor%20retarder.
Source: vapor retarder on Wiktionary, CC BY-SA 4.0.