As building envelope design is changing and becoming more complex, designers and builders need to focus on more than the aesthetic. Conventional building insulation systems do not adequately protect against fire and heat damage, and the results have been catastrophic loss of life and millions of dollars in damages. Using a better insulation system that goes above minimum code requirements is a practical solution … but what constitutes better insulation? This article will compare different insulated metal panel systems and their fire properties, demonstrate the various commercial applications for insulated metal panels, and review applicable fire and building codes. Case studies will demonstrate how the right insulation can save building assets, and lives.