SPEC Toolbox Product Integrations

Sterling Structural is a U.S. mass timber manufacturer focused on making cross-laminated timber more accessible and affordable for the North American construction market. Founded in 1949, the company has evolved into a major domestic producer of CLT, with manufacturing facilities in Lufkin, Texas, and Phoenix, Illinois. Sterling positions itself as America’s largest CLT manufacturer, combining high production capacity with a standardized approach to design, fabrication, and delivery in order to support efficient timber construction across a wide range of project types.

Sterling’s flagship TerraLam® CLT product line is engineered for wall, floor, and roof applications in both mass timber and hybrid structural systems. The company emphasizes standardized panel formats, in-house CNC prefabrication, and compatibility with budget-conscious and repeatable building designs. TerraLam panels are PRG 320 certified, use ANSI 405-certified PUR adhesive, and are supported by ICC-ESR 5053. Sterling also highlights sustainability credentials including third-party verified EPD data, SFI-certified sourcing programs, and a Declare label through the International Living Future Institute.

With decades of manufacturing experience and a strong focus on scalable delivery, cost-effective production, and sustainable construction, Sterling Structural has positioned itself as a trusted partner for architects, engineers, and builders seeking reliable mass timber solutions. Its combination of domestic sourcing, large-scale capacity, and technical support continues to reinforce its role in expanding access to mass timber in contemporary wood construction.