Yes but they contained polyethylene insulation which is highly flammable, much like Celotex, Kingspan etc. Hence no longer permitted above certain heights.
RockwoollIs there any insulation that is not flammable?
Foamglas.Is there any insulation that is not flammable?
I've seen metal (plastic coated galvanised steel), phenolic plastics (which are relatively fire proof) and cement fibreboard used for cladding with insulations such as mineral wool and Kooltherm (phenolic PIR insulation). Cement fibre board is also a sound and heat insulator (but is heavy in thicknesses of 12mm and above)Is there any insulation that is not flammable?
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