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Rough Lumber Rainscreen

ranson | Posted in Green Building Techniques on

I’m considering materials to use for a rainscreen under 1×8 shiplap siding. Will the variation in thickness in rough lumber telegraph through the siding?

Thanks,

John

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Replies

  1. Expert Member
    MALCOLM TAYLOR | | #1

    John,
    It really depends on the range of variance between the pieces. The rough lumber I get here is all dimensionally consistent, it just doesn't have milled faces. If the variance is over 3/16" you will probably see some waviness.

  2. GBA Editor
    Martin Holladay | | #2

    John,
    I agree with Malcolm. I've used rough 1x3s for furring strips, and they've worked well.

    It all comes down to the skill of your sawyer. Get to know your local mills. A good sawyer will be proud to produce lumber with consistent dimensions. Some sawyers don't care as much.

    -- Martin Holladay

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