We like to say our containers are built to withstand Texas summers and Wisconsin winters. Our standard insulation package is more than sufficient to cover most geographic areas in the lower 48. We use 2LB closed-cell spray foam to insulate the walls (2" - r14 value) and ceilings (3" - r21 value) and utilize a subfloor system (r7 value) that we install under your luxury vinyl flooring. We also offer a 'winterization' upgrade package that, at a minimum, includes applying 2LB closed-cell spray foam underneath the container (2" - r14 value) and sealing it from the elements. Some counties may require more spray foam insulation in the ceiling or walls than our standard - no problem at all, we are a fully custom shop so we can add as much, or as little spray foam insulation as needed.