<p>Plywood sturdi floor sub-floor is up to 10% stiffer than oriented strand board (osb), which means there will be less deflection and bounce under your ft. The payoff: your floors perform beautifully after decades of heavy use and heavy furniture.</p> <ul><li>Sturdi floor can be used as a single-layer flooring system, under wall-to-wall carpet and pad, hardwood flooring, and vinyl or ceramic tile</li><br /><li>Firm nail holding ability helps prevent loose fasteners in hardwood flooring</li><br /><li>Features a tongue-and-groove design and can be painted or stained to finish as needed or desired</li></ul>