Rubble Stone and Dry Stack Foundations
My home has areas of basement/cellar as well as areas of crawl space. The cellar areas are rubble stone + mortar and the crawl space areas are composed of flat rocks, dry stacked with sill beam in top.
I retucked the rubble with lime based mortar, as all the old timer masons insisted that the mortar needs to be softer than the stone. I’ve resisted spray foaming the walls for the same reason, “old walls need to breathe” and I wanted to have access to point and tuck again if needed.
I realize now that I smack myself in the forehead whenever I hear the “old timers” say that a house needs to breathe, and my home is tight as can be with an erv for controlled ventilation. Why am I listening to them about the masonry?!?
Looking for confirmation on the best way to manage (and insulate) rubble stone and dry stack, the modern and building science supported way.
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