Initially, we didn't plan to insulate the Shelter. Instead, special tents were to be placed inside, dividing it into compartments. But later, when the basic design was ready, this idea was rejected in favor of the classic heat insulation. Since the hut is considered for year-round and any weather use, and at the same time doesn't have a permanent source of heating, the thermal insulation scheme must withstand frequent temperature drops, be resistant to moisture (dew point formation) within the structure and do not lose its qualities for a long time. Meanwhile, the insulation must be as much fireproof as possible.