OSB Vapour retarder / Guides

Interior sheathing wood frame construction
Air and vapour barriers

Interior sheathing as an air and vapour barrier

...vapour barrier by the National Building Code. Including a vapour control measure on the warm side of the insulation is essential for preventing moisture mo...

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Choosing house sheathing
Wood and organic materials

Which is better, OSB or plywood sheathing?

...vapour barrier goes on the inside of a wall, NOT the outside. Since we intentionally contain water vapour on the interior of a building with a vapour retarder, ...

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Choosing a building envelope
Wall assemblies - new construction

Choosing a building envelope

...vapour control layer: Commonly known as a 'vapour barrier' but a better term to use would be a vapour retarder. A moisture control barrier should slow diff...

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