Products > Aerofullfil > Overview Aerofullfil Full fill cavity wall insulation Kingspan Aerofullfil Properties Download PDF Thermal conductivity 0.031 W/m.K Core High performance moulded graphite enhanced expanded polystyrene that has zero Ozone Depletion Potential (ODP) and zero Global Warming Potential (GWP). Board size 1.2 x 0.447 m