IMT, the Polyisocyanurate Insulation Manufacturers Association (PIMA), and the Center for Environmental Innovation in Roofing introduce the Roof and Wall Thermal Design Guide: Applying the Prescriptive Insulation Standards of the 2015 I-Codes.
This non-proprietary I-Codes Design Guide provides building designers helpful information regarding the prescriptive thermal value tables in the 2015 International Energy Conservation Code and the references to these tables in the 2015 International Green Construction Code. The guide translates this information into simple and straightforward roof and wall R-value tables covering the most common forms of commercial opaque roof and wall construction.
