Exterior XPS rigid foam in Climate Zone 3A
I am building a new house in far northeast Texas, which I believe is climate Zone 3A.
I am planning on traditional fiberglass and/or cellulose insulation between studs, and a vented attic with vents in the soffit and a roof ridge vent, and blown-in insulation on the attic floor.
My plan for the exterior walls is first OSB sheathing, followed by 1″ of rigid XPS foam, Tyvek house wrap, then Hardie cement-board siding.
Does anyone see a potential problem with the design of the exterior walls as far as the rigid foam causing moisture to be trapped between itself and the OSB?