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, and procedures required to evaluate the fire performance of materials used in building interiors, focusing on their potential to accelerate fire growth and impact occupant safety.

As a standard from the National Fire Protection Association, NFPA 286 is recognized within the fire safety and building construction industries as a critical document for evaluating material performance. Its methodology is relied upon by code officials, manufacturers, and testing laboratories to ensure that interior finishes meet established safety requirements. The standard's rigorous approach provides a consistent basis for comparing the fire growth potential of different materials.