What should I do in the walls, floors and ceilings?

Should I insulate the whole van?

Insulate each of them with wool. Our experience would suggest building the floor up slightly from factory specs to allow for extra insulation to reduce road noise and minimize a cold/hot floor depending on the season. Walls can vary based on the finish – panels or T&G. The same goes for the ceiling. Wool does well in all scenarios, it can just require varied creativity to keep the batts in place until the finished product is installed. Call us for ideas