Orin Raichart wrote:I'm not sure I"m understanding the question.
Is your current situation A:
outside |stone wall| air gap |stone wall| inside
Or is your current situation B:
outside |stone wall| inside
Or did you find a cave?
There are ways to insulate all three but the solutions maybe different for all three situations!
Tradition stone houses were built with solid walls as i understand it. These house walls need to be 'breathable', so a lime motar was used instead of modern cement which traps moisture.
But, say you put a cavity inside a natural stone wall and filled it with insulation - is there a moisture/damp issue?