What is the best way to insulate the exterior of a post and beam timber frame HOME with rigid insulation?
...exposed internally. Wall currently has 3/4" Shiplap pine sheathing over the Girts. Looking at emplacing 4" R20 Rigid XPS Panels seam taped. Those would be strapped to the wall with 7 1/2" screws into the Girts. Board and Batten siding would be placed on top (min 1" to 2" air gap behind the Board and Batten). Barn wi...