Sterling Structural’s TerraLam® Receives PRG 320-2019 Certification

Sterling Structural, a division of Sterling Site Access Solutions LLC., the world’s largest manufacture of cross laminated timber (CLT) headquartered in Phoenix, Illinois, announced today (8-9-22) that its CLT line, which is sold under the TerraLam® trade name, has been certified to the PRG 320-2019 (PRG 320) performance standard by the International Code Council – Evaluation Service (ICC-ES).

PRG 320 certification is referenced in the International Building Code (IBC) and is required in North America for CLT panels used in structural applications. With this certification, Sterling and TerraLam are now prepared to supply the fast-growing mass timber construction market.

Lumber used to make TerraLam is 100% domestically sourced from Southern Yellow Pine, America’s most abundant commercial tree species. PRG 320 certification applies to Sterling’s 3-, 5-, and 7-ply panels. Panels can be custom-fabricated or shipped as “billets” for use by offsite fabricators, a growing segment of the mass timber sector.


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Original Source:
The world’s largest CLT producer, Sterling Structural, attains PRG 320 Certification for its TerraLam® CLT