There is an coating you apply like paint, that is far superior to any insulation out there. It is called superTherm. It was invented by NASA, and is used in the aerospace industry, especially in spacecraft that need super insulation against the coldness of space. What this is, is a ceramic coating that can be applied like paint to the interior of you home or other structures to keep the interior warm or cool. What it does is reflect the heat back into the room, just like an emergency blanket reflects heat back into your body. There is very little heat loss and reduces fuel and energy required to heat or cool your home or business. Good Luck. rockhound