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

pK3R9NGRi8 | Posted in Energy Efficiency and Durability on

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

  1. user-869687 | | #1

    Wally, a vapor barrier does not face one way or another. Did you mean to say a radiant barrier? Browse this list for illuminating discussions of such topics.

  2. GBA Editor
    Martin Holladay | | #2

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

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