FR claddings show limited fire spread
Agarwal et al. present large-scale fire test results on twelve different ACM (aluminium composite materials) and HPL (high-pressure laminate) cladding assemblies. They conclude that non-FR thermoplastic core ACM systems show accelerated flame spread within minutes, irrespective of the combustibility of the insulation material. They also conclude that flame-retardant ACM and HPL claddings show limited fire spread. The non-FR systems had polypropylene or polyethylene core. The FR systems had FR-polyethylene or FR-cellulosic core.