Products > Kooltherm > Kooltherm K8 Cavity Board > Overview Kooltherm K8 Cavity Board Partial fill cavity wall insulation Kingspan Kooltherm K8 Cavity Wall Board Properties Download PDF Thermal conductivity (insulant thickness) 0.021 W/m.K (25–44 mm) 0.020 W/m.K ( ≥ 45 mm) Facings Composite foil Core Premium performance rigid thermoset modified resin insulant manufactured with a blowing agent that has zero Ozone Depletion Potential (ODP) and low Global Warming Potential (GWP). Board size 1.2 x 0.45 m
