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Batt insulation facing

kpklein | Posted in General Questions on

For a new construction 2×6 wall (in SoCal), I’ll be using plywood sheathing, Tyvek, two layers of Jumbotex, and conventional stucco. Inside will be batt insulation then drywall/wood/paint. Question: would the best practice be to use un-faced fiberglass batt insulation (as opposed to faced)?

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Replies

  1. Expert Member
    Peter Yost | | #1

    HI Kurt -

    the facings on batts are vapor retarders. In your climate, you don't need any vapor retarder on your insulation.

    Peter

    1. Expert Member
      Dana Dorsett | | #2

      But kraft facers wouldn't be a problem in SoCal.

      With stucco siding it would be better to NOT use FOIL faced batts.

      1. kpklein | | #4

        Thank you Dana...

    2. kpklein | | #3

      That's what I thought, thank you Mr. Yost...

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