April 14, 2014


Changes in the International Energy Conservation Code (IECC) from 2009 to 2012 have resulted in an increase in minimum insulation levels required for residential building. Not only are the levels increased, but the use of exterior rigid insulation has become part of the prescriptive code requirements. With more jurisdictions adopting the 2012 IECC builders are going to find themselves required to incorporate exterior insulation in the construction of their exterior wall assemblies. This research is an extension on the previous research that has provided significant insight into the mechanics as well as long term performance of exposed assemblies that use wood furring strips attached through the insulation back to the structure to provide a cladding attachment location.