thumbnails previous Photo showing part dismantled room wall. Green line shows the property dividing line (brick wall down to cellar below), where the approved 1970 plans show the room to be. The blue line is where the 1970 wall was built. The "fire break" consists of 3 layers of concrete blocks, sitting directly on the chipboard floor with a studding wall inside. There is a 6" gap with below the chipboard. next