Air Sealing and Insulating Masonry Walls

We’re in the process of renovating part of a late 19th century carriage house in Philadelphia.  The stem walls are Wissahickon Schist and change to triple wythe brick about 3o”… We’re in the process of renovating part of a late 19th century carriage house in Philadelphia.  The stem walls are Wissahickon Schist and change to triple wythe brick about 3o”…Read MoreGreenBuildingAdvisor