Hi, I know this is an old topic. I am building a house with adobes in Cyprus. It is based on a steel frame. We left a 10cm gap between the exterior adobe wall and did a steel stud wall and placed cement board. We where told to then drill a few vent holes on the exterior. I am not an expert so I don't know how many holes will do.I have been told not to use cement based plasters on the interior as cement does not breath and create problems to the earth wall.. We have a special gypsum+perlite mix that they use for earth walls. However these are relatively soft and I am afraid that walls will be banged all the time by the kids. We even thought of doing the same as we did outside, creating a steel stud wall and placing either cement board or gypsum drywall and again create vent holes. however its not as solid as a cement plaster on a reinforced adobe wall with mesh. any advice will do.