Can you put exterior insulation over Zip System wall sheathing?
Building a house and have zip plywood on the exterior (not zip-r which is insulated) & want to add 1" rigid foam to the exterior with open cell on the interior. Or 2" closed cell with r13 bath insulation. Which combination above would be best? Also would there be an issue with installing one inch foam directly to zip? Planning on attaching until siding directly to the foam.