Hello everyone, my name is Chris and I’m starting a new build just outside of Toronto, Canada. I’m pretty much in the same climate zone as Detroit. 

My house will be a poured basement foundation, with 2 stories approx 4000 sq feet climate controlled. I’d like to create an air tight assembly that is very energy efficient. I would like to clad the walls in thin stone veneer, and so decided the zip R would be my best bet, rather than exterior Mineral wool. I know there is some vapour issues with zip R in northern climates, but does anyone see any major issues with the assembly I’ve put together here?