NRG Insulated Block creates insulated thermal mass, a complete separation between the interior and exterior block components. NRG is the only commercially available block that features zero thermal bridging, which enables it to achieve a very high effective R-value (R-22).
Advanced Energy Design Guides, co-produced by the US Green Building Council (USGBC), US Department of Energy (US DOE), the American Institute of Architects (AIA), and the American Society of Heating, Refrigeration, and Air-conditioning Engineers (ASHRAE), recognize insulated thermal mass as the most energy efficient insulation configuration for mass walls in all climate zones.