For a new addition with 2x4 walls with exterior osb sheathing:
I need to add 1" rigid foam insulation to meet rescheck energy compliance. Not sure how to handle window and door installation when using rigid foam insulation.
1. Do I secure windows to osb first then add rigid foam or put foam on first and then windows over foam? If windows go first, not sure how to build out the frame and install vinyl siding.
2. Do I still use a house wrap like tyvek directly over osb sheathing?