Responsible construction strategies for sustainable buildings are now high on the political agenda, as building regulations increasingly conform to frameworks on climate change, such as the Kyoto agreement. DuPont™ Energain® is a radical new concept in thermal mass materials that could revolutionize the way the world constructs. It provides a long-term sustainable solution to helping reduce energy usage and costs in low inertia public, commercial and residential buildings, which are designed for framed construction in timber, steel or aluminium.