Oriented strand board holds screws reasonably well for general construction purposes, such as fastening subflooring, wall sheathing, or roof decking to framing joists, but it generally performs less effectively than traditional multi-ply plywood, particularly along the edges of the panel. Because OSB is composed of compressed wood strands rather than continuous cross-laminated solid veneers, driving screws too close to the edge of an OSB panel can easily cause the material to split, crumble, or lose its gripping power. When maximum fastener retention or edge-screwing strength is required, traditional softwood plywood or solid dimensional lumber is frequently preferred over standard OSB boards.
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