I have a new tiny home shell in east Texas. It's 16x40 shell with wood siding 4x8 sheets on the out side. The kind with a groove every 4 inches. The house has a weather wrap on it already.
Metal roof. 2x4 walls and ceiling. 2x6 floor joists. 5/8 Plywood flooring. Thinking of adding 1/2" on top of that just for extra measure. Walls an floor 16" center. Ceiling 24" enter Siding is 4x8 sheets rough siding with grooves every 4"
What's the best way to insulate?
#1....Can I use 1/2" EPS foam on exterior or so I need to use a foiled foam sheet?
#2.... can I put more foam between the studs on the inside for better protection with my fiberglass insulation (Or would I need a thicker foam sheet on the inside)? I would peel the thickness of the foam off the fiberglass faced insulation.