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What is NFPA 255?


NFPA 255 utilizes the standard test method of surface burning characteristics of building materials developed by the American Society for Testing and Materials (ASTM), specifically ASTM E 84. This test method is used to determine the comparative burning characteristics of a specific material by evaluating the flame spread over its surface to 2 known items. Flame spread is a ranking developed through laboratory testing of a material's tendency to burn rapidly and spread flames throughout a space. Smoke density is also recorded during this testing procedure. If you are looking for more specific information regarding flame spread testing, visit this website.

Unfortunately, NFPA 255 does not provide a good understanding of how a fire would propogate in full scale (such as a room) for certain materials. Therefore NFPA 286 was derived in order to address some of these restrictions. More information for NFPA 255 can be found here.