ZIP System R Sheathing vs Roxul Comfortboard
Building in the Canadian Rockies, so climate zone 5-6 ish.
Up until now I have been considering building a 2×6 exterior wall (with Roxul Comfortbatt in the stud bays) covered in 1/2″ exterior plywood, installing a air/moisture barrier from Stogard over the exterior of the plywood sheathing and then fastening1 1/2″ Roxul Comfortboards over the Stogard.
The addition of the Comfortboard is primarily to raise the interior surface temperature of the sheathing so any moisture within the wall cavity doesn’t condense on the plywood. Needless to say, the Comfortboard complicates the window, door, siding and trim details.
Now I see the ZIP System R-Sheathing.
Using it would eliminate several steps, but is there any disadvantage to having the rigid insulation on the interior of the sheathing rather than on the exterior? Are there added dangers for moisture becoming trapped inside the wall cavity?
I’ve read that there have been issues in the past of difficulty sealing the seams between panels. Does anyone have experience with this ZIP R system or would recommend it over the Stogard/Comfortboard approach?