Styrofoam board insulation was added between the walls. Each piece had to be measured, cut and put into place. This was fairly easy just time consuming. We used tape to keep all of the wiring in place.
The curved areas were a little tricky but it all worked out. In some places we had to cut the pieces in half and tape them together to get a tight fit.
Fiberglass insulation was used on the curved end caps with spray adhesive to keep it in place.
The goal was to heat it with a match and cool it with an ice cube….