Saint-Gobain Corp., headquartered in Valley Forge and parent company to CertainTeed Corp., said it joined a White House-backed pledge among 60 companies and organizations to invest in energy efficiency projects.

Saint-Gobain, with 19,000 employees at 114 manufacturing sites in North America, said it has targeted a 25 percent reduction in energy consumption by 2019 over 20 million square feet of building space.    - Reid Kanaley