First, we added wooden framing to the metal enclosure walls, then installed Intello vapor smart membrane to the walls and ceiling to contain the insulation and manage moisture and densepacked the walls with all-borate Igloo cellulose. There was a lot of staging and climbing needed to get to the ceiling and top of the walls and the guys did a beautiful job working around all the obstacles. It was fun working around such large incredible animals. Clearly by our name, we love animals and take pride in using healthy products and doing our best to keep them safe.