I am trying to finalize details on a home remodel project that calls for 3" of rigid foam outside the sheathing, then steel board and batten covering the foam. I am trying to figure out the best way to mount the siding since manufacturer suggests it going on horizontal furring. However this does not allow vertical ventilation or drainage unless I do another perpendicular layer of furring. We're talking a pretty thick wall at that point!!
Any suggestions getting vertical board and batten (steel not wood) on an exterior rigid foam house? It is a pretty dry climate in zone 5.