Polyisocyanurat , AKA: PIR, polyiso eller ISO -Wiki
Under en brand kan polyisocyanurat frisätta en betydligt högre nivå av toxiner än andra isolerande material . Annat än PVC (som släpper ut dioxin), kan jag inte tänka på ett sämre byggmaterial för inandning av rök från. Andra typer av skum kan vara "bättre" men alla skulle ha ett brandskydd. Jag har inte installerat ISO på 20 år, andra är mycket billigare (som halv pris) och nästan samma R-värde (~ 5 vs 6).
A 2011 study of fire toxicity of insulating materials at the University of Central Lancashire's Centre for Fire and Hazard Science studied PIR and other commonly used materials under more realistic and wide ranging conditions representative of a wider range of fire hazard, observing that most fire deaths resulted from toxic product inhalation. The study evaluated the degree to which toxic products were released, looking at toxicity, time-release profiles, and lethality of doses released, in a range of flaming, non-flaming, and poorly ventilated fires, and concluded that PIR generally released a considerably higher level of toxic products than the other insulating materials studied (PIR > PUR > EPS > PHF; glass and stone wools also studied).