A study was undertaken in 2016 to determine the contribution of the building fabric and the building contents to the toxicity of smoke effluents produced during the different phases of a fire.

This paper presents and evaluates two fire tests conducted in a furnished domestic room only differing in the type of the used wall insulation product to assess its relative contribution to the fire compared to the room content. The test results with regard to heat release rates, smoke and toxic gas emissions show that the organic polyisocyanurate insulation and mineral fibre insulation behave similarly during the fire and the main threat for occupants emanates from the room contents.

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