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Community and Q&A

Extra furring strips into OSB only

Reid Baldwin | Posted in Green Building Techniques on

I was recently snooping around a house under construction by Habitat for Humanity in Traverse City Michigan. The house is frame 24″ o.c. and has two layers of 2″ XPS foam (4″ total) over the OSB sheathing. In addition to furring strips over each stud, they have attached furring strips between each stud such that there is a furring strip every 12″. As far as I could tell, the only thing these additional furring strips could attach to is the OSB. Does this make sense? Would this help support the siding by holding siding pieces to each other mid-span even if it does very little to support them vertically?

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Replies

  1. Expert Member
    Dana Dorsett | | #1

    Flexible siding such as vinyl may need spacing tighter than 24" to deliver a reasonably flat surface. What type of siding is going up?

  2. Reid Baldwin | | #2

    I don't know the type of siding. The units that are finished are already occupied, so I didn't want to snoop around those. Vinyl is a good guess.

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