Types segmentation classifies OSB based on panel thickness, density, and performance specifications, each affecting its suitability for residential projects. Standard‑grade OSB, typically 12–18 mm thick with a density of 550 kg/m³, dominates the market because it meets code‑minimum requirements for wall and roof sheathing, representing the bulk of volume sales. Premium‑grade panels, often 15–22 mm thick and engineered for higher moisture resistance and load‑bearing capacity, capture a growing share as builders pursue tighter energy envelopes and longer service life. Structural‑grade OSB, exceeding 22 mm thickness and featuring enhanced resin binders, is confined to high‑load applications such as multi‑story floor systems, accounting for a modest but strategic portion of demand. Additionally, fire‑retardant treated OSB, produced through additive chemistry, addresses stringent fire‑code jurisdictions and commands a price premium. The distribution of these sub‑types shapes the market taxonomy by aligning product development and pricing with the functional demands identified in the application segmentation.