Open truss post frame roof
I am building a cabin on Ky lake and want to do it post framed. The floor plan calls for vaulted ceiling over the kitchen and living area. I want to do exposed scissor trusses on 8’ centers. My thoughts were to span the trusses with vertical 2x6s on 24” centers and fill with batts then cover the bottom side between the trusses with tongue and groove pine. So what would I cover the top side 2x6s? I was thinking osb then 2” rigid foam then layer of 1/2 plywood screwed to the 2x6s then foil bubble wrap then metal. Doesn’t seem to be anyone around here, southern Ky, that cares much about good insulation and sealed house. I don’t have any education other than applying different parts of roofing projects I have seen online and what I have seen in person. Please point out problems with this idea or a better way. I’m not going to do sips.