[Suggestion] Insulation for Stone or Concrete Houses

I think it would be cool to live in the snow biome and be able to build a house that has insulation.

Eg.: you would build a stone house, then add a layer of insulation to the walls, then build the inner wall (but only out interiror wood that you can craft with carpentry bench). I know that your house and everything else gets wiped when you leave the planet, but it would still be a cool addition in cold places.