Rights: The University of Waikato Published 3 November 2009 Download

This video compares the burning of a synthetic sofa with the burning of a sofa that has fire-retardant features - It has a woollen fabric covering and contains combustion-modified foam (foam with chemical fire retardants).

Points of interest

  • At about 1 minute 20 seconds, what do you notice about the way the two fires are burning?
  • How long did it take the synthetic sofa to be completely engulfed in flames? Compare that to the other sofa.