This Technical Report provides guidance on flame spread tests for construction products. It describes the principles of flame spread and classifies different flame spread mechanisms.
The results of small-scale flame spread tests (e.g. ISO 5658-2 [31], ISO/TR 5658-3 [32] and ISO 9239-1 [35]) and large-scale tests (e.g. ISO 9705 [13]) may be used as components in a total hazard analysis of a specified fire scenario. The theoretical basis of these tests is explained so that relevant conclusions or derivations may be made from the test results.