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vapor retarder

Noun CEFR B2

Definitions

A layer of material or a laminate used to appreciably reduce the flow of water vapor into a roof assembly.

CEFR level

B2
Upper Intermediate
This word is part of the CEFR B2 vocabulary — upper intermediate level.
See all B2 English words →

See also

vapor trail vaporability Vaporable vaporarium vaporary Vaporation

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