Exterior wall configuration
I am starting to build a home in Minnesota and have been reading all over the internet and on this site about energy efficiency and exterior wall construction/mold issues and have read many of the excellent/expert articles on the subject. I want a solid wall that is going to be mold free in 50 years and somewhat energy efficient at the same time. I would like to implement the following wall configuration if any of you could please comment on it, it would be greatly appreciated:
From interior to exterior:
2. Polyethylene barrier
3. JM Spider sprayed in fiberglass insulation in 2 x 6 stud walls
4. 1/2 inch plywood
5. Benjamin Opdyke Hydrogap WRB
6. Fiber cement and stone veneer
Is this a good wall? Does this make sense? Do you think I will get a lot of condensation on the inside or outside of the exterior sheathing in the winter in climate zone 5 that wont dry out in the summer?
I am worried about exterior foam for drying to the exterior. I am worried about interior spray foam and the potential VOC hazards with it, don’t want any issues with any offgassing as we have sensitive allergies in the home. Is JM Spyder any better than Fiberglass Batts?
Thank you all very much. I know there are a lot of questions but very much appreciated.