This standard outlines the methodology for assessing how interior wall and ceiling finishes contribute to the spread of fire within a room. It details the specific test apparatus, specimen preparation, ignition source, and measurement procedures required to evaluate the fire performance of materials used in building interiors. The objective is to provide a standardized approach for classifying materials based on their potential to accelerate room fire growth, thereby informing building codes and safety regulations.

As a standard from the National Fire Protection Association, NFPA 286 is a critical document for fire safety professionals, building code officials, and material manufacturers. Its authority stems from its development through a consensus process involving diverse stakeholders in the fire protection community. The standard is widely adopted and referenced in building codes across jurisdictions, serving as a foundational tool for ensuring the fire safety of interior finishes in occupied spaces. Its rigorous testing methodology provides a reliable basis for material classification and risk assessment.