I believe that cavity walls go quite a long way back, but I was intrigued by one I found the other day. I was walking near Knock Hill in Fife and took a look at a ruined farm.
The walls of the old stone buildings were all standing, but a little further on there was the remains of a brick built two story house with only a gable end still standing. The cavity in the walls was some 10 inches wide - wide enough to take the chimney flues - and the ties between the leaves were 18 inch long bricks. Anyone any ideas what sort of period this might have been ?
Rob