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How much rigid insulation on the outside of this house?

Chuck Everett | Posted in Energy Efficiency and Durability on

Old farm house. Want to add proper amount of rigid insulation over existing clapboards and install wood siding.

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  1. GBA Editor
    Martin Holladay | | #1

    Chuck,
    Q. "How much rigid insulation on the outside of this house?"

    A. The answer depends on your climate and the depth of your studs. For more information on this issue, see Calculating the Minimum Thickness of Rigid Foam Sheathing.

    I also suggest that you read this article: How to Install Rigid Foam Sheathing.

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