NFPA 80A, titled Recommended Practice for Protection of Buildings from Exterior Fire Exposures, focuses on minimizing the risk of fire spreading from one building to another through exterior exposures. The latest 2022 edition offers updated guidelines for separation distances, classification of building materials, and methods of protection—critical for safe building design in clustered developments.
The document targets Authorities Having Jurisdiction (AHJs), architects, fire protection engineers, and insurance professionals, providing detailed best practices to prevent adjacent-building fires. It outlines recommended minimum separation distances based on building height, presence of openings (like doors and windows), and exterior construction features.
One key update in the 2022 edition is the classification of noncombustible exterior materials in Chapter 4—ensuring that façade components are correctly assessed for fire exposure risk .
Additionally, the standard integrates latest fire testing protocols, including NFPA 286, ASTM, and UL methods, to validate the fire performance of wall and ceiling finishes.
Chapter 5 provides strategies for active and passive protection, such as rated firewalls, fire shutters, sprinklers, and water curtains. It advises on how to evaluate, select, and apply appropriate protective systems tailored to specific exposure scenarios.
NFPA 80A supports sound risk-informed decision-making, ensuring that building clusters—like townhouses, shared walls, or campuses—have the resilience to prevent exterior fire spread until firefighting measures are in place. It harmonizes with related standards like NFPA 13 (sprinklers) and NFPA 80 (fire doors) to deliver a cohesive fire protection framework.
