Products > Kooltherm > Kooltherm K7 Pitched Roof Board > Overview Kooltherm K7 Pitched Roof Board Insulation for tiled or slated pitched warm roof spaces Kingspan Kooltherm K7 Pitched Roof Board Properties Download PDF Buy it Now Thermal conductivity (insulant thickness) 0.023 W/m.K (15-24mm) 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 2.4 m