Cornfused - Exterior wall insulation/construction
Hi all - First time poster, long time reader.
My question relates to insulation of a new home we will be building in Central Illinois. I've researched this high-and-low, and the more I read the more I am confused.
I'll be acting as the GC and partial builder on this house, and I'm interested in hearing your thoughts on this exterior wall insulation plan.
Starting from the inside wall out:
2. 2x4 studs with blown cellulose
3. 7/16 OSB
4. Tyvek or equivalent
5. 1" XPS
6. Exterior siding currently undecided. We have to use some brick or stone and the rest will be vinyl, fiber cement, or cedar lap.
Although I think this would make for a fairly tight home with low thermal bridging, I'm worried about flashing of windows to the foam and also where the condensation point could occur inside the wall.
Any thoughts on this plan would be appreciated!