Due to site constraints we had to do the outer skin first, and will be now adding the insulation and building the inner skin from Celcon blocks. A few questions I have which I would appreciate any advice on ?   How come in some images the insulation doesn't go to the bottom of the cavity? Wouldn't that reduce the wall's insulation properties? Is there anything wrong with going all the way to the bottom of the cavity?   As I'll have to cut and place the insulation in the cavit