What is the most cost effective way to build a rain screen wall assembly?
...wall 2x6 stud wall 24" o.c. w/1.5" closed cell and 4" open cell insulation (for sealing and cost reasons) 7/16" sheathing, tyvek house wrap, metal siding. Would like to do more of an assembly like this and would like your opinion on both or better options... reclaimed barn wood over 1/4" drywall, 2x4 stud wall 24" o....