We have a greenhouse "already built" and we are adding onto it. We are interested in the rocket stove aspect but wonder how it would work. The addition of 12 foot would be added to the west side of the greenhouse. How would we construct the rocket stove as to not burn the new wall. Do you have to put a heat barrier wall where you are putting the rocket stove and lounging area???right up against the new extended wall or inner greenhouse wall? thanks, sure do enjoy watching your videos Mearie