Permeance
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Permeability of Oriented Strand Board
A look at whether the claims around OSB's permeability ratings prove true in practice
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How to Deal With a Vapor Barrier Edict
When a local code inspector insists on an interior polyethylene vapor barrier, plans for a simple addition to a Canadian home suddenly get more complicated
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Facing Kraft-Faced Fiberglass Batts
Should the paper facing of batt insulation face the inside or outside? The answer lies with the material's permeance.
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Do I Need a Vapor Retarder?
Someday, builders will stop asking this recurring question — but unfortunately, that day has not yet come
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How to Choose Insulation
In this excerpt from their textbook, Green Building, Carl Seville and Abe Kruger discuss insulation and air sealing
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Green Building Vocabulary Disputes
Watch out — sloppy terminology may earn you a scolding from the word police