Rollover is a stage of a structure fire when fire gases in a room or other enclosed area ignite. A structure fire is a Fire involving the structural components of various residential or commercial Buildings such as Single-family homes Since heated fire gases, the product of pyrolysis, rise to the ceiling, this is where a rollover phenomenon is most often witnessed. Pyrolysis is the Chemical decomposition of organic materials by heating in the absence of Oxygen or any other reagents except possibly Steam Visually, this may be seen as flames "rolling" across the ceiling, radiating outward from the seat of the fire to the extent of gas spread.
Rollover is not the same as flashover, although it may precede it. For the 2007 documentary see Flashover (film. In Electric power transmission, a flashover is an unintended high voltage electric discharge over In the case of rollover, only gases present in the room, not the room contents, ignite.
Rollover is also known as Flameover.
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