The intent of this brief is to provide code-related information about insulated interior/exterior wall intersections to help ensure that the feature will be accepted as being in compliance with the code.
Guidance is needed for code-compliant installations of various cladding materials when installed over thicker foam sheathing also known as insulated sheathing or continuous insulation (c.i.).
Double stud wall wood framing is not specifically addressed in the International Residential Code (IRC) or International Energy Conservation Code (IECC); it is neither encouraged nor discouraged. Recommendations of where the vapor retarder and air barrier should be placed, based on research and testing are further defined in this Code Compliance Brief.
This brief discusses the provisions in the 2015 International Energy Conservation Code (IECC) and International Residential Code (IRC) related to evaporative cooling.