Oriented Strand Board (OSB): Market Size & Forecast 2026

The global Oriented Strand Board market reached approximately USD 18.5 billion in 2025 (base year), anchored by residential construction demand for sheathing and flooring across North America, Europe, and Asia-Pacific. The category advances at a 5.2% CAGR through 2032, driven by residential RMI programmes, mass timber construction adoption, and growing emerging-market penetration. Softwood timber feedstock accounts for 48% of finished cost, creating a direct link between roundwood availability, regional OSB pricing, and procurement outcomes. The April 2024 Arauco-Sierra Pine consolidation reshaped North American supply architecture, while Section 301 List 3 tariffs on Chinese-origin OSB continue to divert trade flows and compress buyer sourcing optionality. Buyer Power Score of -1.8, supplier-favoring on the -5.0 to +5.0 scale. > **Analyst Take.** Our view: the consensus 5.2% CAGR looks

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