Roofs are exposed to very harsh weather conditions over many years. To avoid corrosion and guarantee the longevity of steel sheet roofing, the coating of the steel must be of the highest quality. The coating structure is typically built up of three layers of lacquer over a basic zinc coating.
Virgin Atlantic’s Flight100 saved 95 tonnes of CO2 in first SAF flight
There are government reports on biomass -includes other costs of preparing (transport and drying are big ones); never mind the lost CO2 sequestration...