Forisk Research Release: Top North American OSB Producers

Forisk Research Release Top North American OSB Producers Include  #1 West Fraser and #2 Louisiana-Pacific Oriented Strand Board (OSB) is an important sector in the forest products industry that is highly concentrated. Nine North American companies encompass the entire OSB sector, capable of manufacturing 26.5 BSF (3/8”) in 2025, with seven of them operating in the United States, according to Forisk Consulting. Forisk tracks over 2,350 forest industry mills, including planned capacity changes, to publish the North American Forest Industry Capacity Database (“Mill Capacity Database”) and generates industry research and projections in the Forisk Research Quarterly. From the mill database, Forisk published a list of the top OSB producers in North America and the U.S. “The U.S. OSB sector is more concentrated than the broader North American sector, with only seven firms producing OSB,” according to Amanda Lang, President and COO of Forisk Consulting. “U.S. producers are capable of producing 17 BSF of OSB, which is 64% of North American production.” Forisk’s data confirms that West Fraser was the largest producer of OSB, both in the U.S. (4.5 BSF) and in North America (7.8 BSF). Louisiana-Pacific Corp was the second-largest producer, with 2.6 BSF manufactured in the U.S. and 4.1 BSF in North America. Georgia-Pacific was the third-largest North America producer with 3.3 BSF, and Huber Engineered Wood was the third-largest U.S. producer with 2.6 BSF in 2025. Each quarter, Forisk Consulting compiles data on mill activity through its ongoing tracking of wood-using facilities as part of Forisk’s North American Mill Capacity Database, a database of over 2,350 wood-using mills in North America. Mill updates are published in each quarter in the Forisk Research Quarterly (FRQ). This release provides a ranking of OSB producers from the 2026 Q2 edition of the FRQ. About the Mill Capacity Database: Forisk’s North American Mill Capacity Database provides forest industry stakeholders with detailed capacity, ownership, and wood-use data for wood-using mills across North America. The database supports strategic planning, competitive benchmarking, investment analysis, and supply chain assessment. For more information, visit www.forisk.com or contact Nick DiLuzio at ndiluzio@forisk.com.   Forisk Consulting | www.forisk.com

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