You can use insulated concrete forms[1] blocks. I've helped a friend build a house this way, it's like putting together lego blocks. [1] https://en.wikipedia.o

You can use insulated concrete forms[1] blocks. I've helped a friend build a house this way, it's like putting together lego blocks. [1] https://en.wikipedia.org/wiki/Insulating_concrete_form https://en.wikipedia.org/wiki/Insulating_concrete_form