• Astongt615@lemmy.one
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    10 months ago

    So flammable mater + low airflow is somehow more fire resistant than flame resistant mater + low airflow? Looks like the source is pure marketing unless their comparable insulation is perforated cardboard coated in fuel gel.

    • Hyperreality@kbin.social
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      10 months ago

      Roof/attic often uses rockwool or glasswool. Wall insulation is often something like XPS, PIR or PUR.

      Although it sounds counterintuitive, I can see straw doused in flame retardant being better than supposedly flame retardant polystyrene foam made from hydrocarbons. I mean, just look at what happened with Grenfell Tower.