Div. B › Part 9 › 9.25 › 9.25.3 — Air Barrier Systems

9.25.3.4 — Vapour Barriers Used as Air Barriers

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(1) A vapour barrier used as an air barrier shall comply with the requirements of this Subsection.

OBC Definitions

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vapour barrier

means the elements installed to control the diffusion of water vapour.

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