A1-A3 - GWP-IOBC0.50706 kg CO2 eq.EPD programme operatorThe Norwegian EPD Foundation EPD NameRoof board made from planed timber of Spruce C4 - global warming potential0.0 kg CO2 eq.A5 - global warming potential0.017712 kg CO2 eq.C2 - global warming potential0.016578 kg CO2 eq.Name of verifierMartin Erlandsson Time period5 5.0 ÅrD - global warming potential-1.1556 kg CO2 eq.A1-A3 - global warming potential0.50706 kg CO2 eq.Reference service life according to ISO 15686-860 60.0 ÅrA4 - global warming potential0.03537 kg CO2 eq.C1 - global warming potential0.001431 kg CO2 eq.