Building Construction Concerns for Firefighters: Roof Coverings: Pitched Roofs

By Gregory Havel The ideal roof covering is difficult to ignite. This concept was proven in past centuries during conflagrations, when embers rose on the thermal column, were carried on the wind, fell onto roofs at a distance, and ignited those that were combustible. Fire ratings for roof coverings are tested by ASTM E-108, UL 790, and National Fire Protection Association (NFPA) 276, Standard Method of Fire Test for Determining the Heat Release Rate of Roofing Assemblies with Combustible Above-Deck Roofing Components, 2011 Edition. These standards classify roof coverings as Class A, Class B, Class C, or "unrated" based on their ability to: resist the spread of fire into the att...

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