Changing Energy Codes and increased NFPA 285 material triggers in the Building Code are altering the way many building envelopes are constructed. This course outlines the requirements, methods, materials and techniques to comply with the changing exterior wall expectations. The most common contributing factors to non-compliance of designs requiring NFPA 285 assembly testing include: lack of understanding of applicability of test on exterior wall assemblies vs individual products; recent building and energy code changes causing new triggers for testing; NFPA 285 is the Standard Fire Test Method for Evaluation of Fire Propagation Characteristics of Exterior Non-Load-Bearing Wall Assemblies Containing Combustible Components. This seminar will discuss the impact of codes, test parameters and history of NFPA 285, and the definition of what building envelope components trigger NFPA 285 assembly testing requirements. All of these elements combine to demonstrate how to integrate NFPA 285 compliant assemblies into building envelope systems.