The Ontario Building Code | Vapour Barriers Used as Air Barriers
9.25.3.4. Vapour Barriers Used as Air Barriers
(1) Avapour barrier used as an air barrier shall comply with the requirements of this Subsection.
9.25.4. Vapour Barriers
9.25.3.4. Vapour Barriers Used as Air Barriers
(1) Avapour barrier used as an air barrier shall comply with the requirements of this Subsection.
9.25.4. Vapour Barriers
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