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Community and Q&A

Double-stud wall assembly with NuCedar shingle siding

miket1970 | Posted in GBA Pro Help on

I plan on building a cottage on the East coast in New Brunswick Canada this summer (Zone 6).
I am interested in a higher R value wall assembly either by one of these two common cost-effective ways: building a double-stud wall with dense packed cellulose or building a 2 x 6 wall with a continuous layer of rigid foam insulation on the exterior side of the wall sheathing.
We were planning on installing NuCedar shingles as the exterior siding. This product however must be installed on solid sheathing and cannot be installed over furring strips according to the manufacturer.
A double-stud wall therefore seems to be the better (or only) option in this instance.
Any recommendations or tips for an appropriate double-stud wall assembly with regards to the NuCedar product and our climate zone??



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  1. Expert Member


    I'd be a bit worried using a double-wall with an impervious siding like NuCedar. The sheathing on double-walls can be susceptible to accumulating moisture. The usual solution is to make sure the sheathing can easily dry to the exterior - often by incorporating a rain-screen gap. If you need solid backing that option is out, and the PVC siding will further limit the amount of drying that can occur.

  2. miket1970 | | #2

    Thank you for your comments Malcom.
    Any other low maintenance substitutes for Eastern cedar shingle siding that would work well with any of these two wall assemblies?

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