Raised slab – insulation and vapor barrier
I have some raised slab questions. I had posted in a different thread but it went off topic slightly, more toward floor plan issues. So I was hoping to get more feedback on the actual slab questions.
So new build in Pender County, NC.
Climate zone 3…warm humid.
Simple rectangle envelope.
Front door facing N (slightly NE).
50’ x 39’ interior dimensions.
Wrap around porch (front and east).
Back porch / outdoor living area.
I want the aesthetics of a crawl space (raised) but without the potential issues, so I would like to build on a raised slab like this…
Pros/cons of this method? Would insulating the slab be necessary for my climate zone? If so, how should insulating be done? Rigid foam underneath like with a non-raised slab?