The United States enjoys one of the highest standards of living in the world. One contributing component of this standard of living is the supporting array of buildings and infrastructure. According to the Environmental Protection Agency this building stock constitutes approximately 40 percent of the total yearly energy expenditure of the nation, and accounts for 12 percent of total water consumption, 68 percent of total electricity consumption and 38% of total carbon dioxide emissions into our atmosphere.

GL03 describes a process that provides the flexibility for an owner to incorporate building enclosure commissioning into their project. The Building Enclosure Commissioning (BECx) process is utilized to validate that the performance of materials, components, assemblies, systems and design achieve the objectives and requirements of the owner as outlined in the contract documents.