Moisture sealing on top of stone foundation

I have an 1890s balloon framed 2 story hour.  It has a basement, and the foundation is mortared stone.   The rim joist and floor joists sit directly on the stone… I have an 1890s balloon framed 2 story hour.  It has a basement, and the foundation is mortared stone.   The rim joist and floor joists sit directly on the stone…Read MoreGreenBuildingAdvisor