ICC's Commentary is the tool you need to understand the application and intent of the requirements of the 2009 International Energy Conservation Code (IECC).  This book contains the complete text of the IECC, all tables and figures in the IECC, corresponding commentary after each section, suggestions for effective application, historical and technical background of the code, and general comments and purpose statements for each chapter. The commentary is a valuable and reliable reference for anyone wanting to effectively design, construct, or regulate buildings.