Vincent Briard is Group Sustainability Director at Knauf Insulation. Yosr Melki is Marketing & Communications Director Western Europe at Knauf Insulation. Any assessment of a building’s sustainability must take into account the carbon emitted from heating and cooling during the entire lifecycle of that building as well as the CO2 associated with all its components, using an independent and scientifically robust audit known as a Lifecycle Assessment or LCA. That means examining the embodied carbon of all building materials during their lifecycle — from the extraction of materials, transportation, storage and manufacture to distribution, installation and end of life, while also looking into the operational carbon of that building resulting from its energy consumption.