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Does it make any sense to use an outward facing vapor barrier on the interior side of an exterior wall?

Wally Dorsey| Posted inEnergy Efficiency and DurabilityonDecember 1, 2011 06:33am

I was thinking of using a vapor barrier installed backwards between the sheet rock and the insulation. Good Idea or bad idea?

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Replies

TJ Elder|Dec 01, 2011 06:45pm|#1

Wally, a vapor barrier does not face one way or another. Did you mean to say a radiant barrier? Browsethis listfor illuminating discussions of such topics.
GBA Editor

Martin Holladay|Dec 01, 2011 07:24pm|#2

Wally,
Most walls don't need a vapor barrier. For more information, seeVapor Retarders and Vapor Barriers.

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