(1) A fire condition wherein gasses are ignited at the ceiling level of a room. (2) One of several measurements that are used to determine the threshold at which a fire test is terminated. Flash Over can be a visual observation of flames exiting the structure or a measured heat flux or temperature limit.

SPFA believes that the path to a healthful, safe, high-quality and performing SPF installation travels through the hands of a knowledgeable, trained, experienced, and ideally PCP-certified professional contractor.