Is it possible to add a room onto an existing earthbag structure and, if so, how would it be accomplished?
The best way to add on to an earthbag house is to prepare for that possibility in advance and place a dummy doorway where it might be needed. This way it is a relatively simple matter to plaster over the door until you want to make the addition, and then just knock out the bags in the doorway with no concern about collapsing walls. Otherwise, it might be necessary to carefully brace and provide support for what might be above the doorway (or window) as you remove the bags in the wall. How would one attach the walls of the new addition to the walls of the structure already in place? I mean, would it be necessary to physically attach them or would it suffice to butt the new wall up against the old one as long as it is tamped and buttressed and the gap sealed properly? In most cases simply butting the walls against each other would suffice, but to assure that the connection is as cohesive as possible, you could pound rebar stakes into the old wall in such a way that they get embedded in t
