EDGE was commissioned by James Hardie to update and expand the life cycle assessment (LCA) of their fibrecement and flooring product range. This work builds on the publication of the Environmental Product Declaration (EPD) of James Hardie external cladding fibrecement products in 2017. The LCA of James Hardie’s products provides the basis for James Hardie to present comprehensive product environmental credentials to customers and other stakeholders. The LCA has been developed specifically for developing EPDs following the ISO 14025 and EN 15804 standards. The LCA and EPD positions James Hardie to provide environmental data and information for green building ratings such as Green Star, as well as providing their innovation and R&D departments with valuable insights into life cycle hotspots and opportunities to improve the circularity and sustainability of their products.