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Most builders rate plywood and OBS equal in strength and durability, but OSB does have some advantages over plywood: It has a textured, slip-resistant surface, which makes it safer to install on roofs.
OSB consists of compressed wood strands bonded with adhesives, providing a cost-effective and uniform panel. Plywood, on the other hand, comprises layered wood veneers, offering greater strength and a smoother surface.
VS. Plywood. $650. (for 500 sq. ft. installed) Cost varies greatly by region (and even by zip code). Find out how much your flooring project will cost. Calculate Cost. OSB. Pros. + Less expensive. + Larger panels available. + More environmentally friendly. + Heavier, thicker material. + Versatile with many uses. Cons. - Swells with water.
OSB has twice the horizontal shear strength of plywood. It's a better option than plywood for subflooring in attics and sheds. Also, OSB panels can be an advantage when flooring a big or odd-size shed, reducing the number of joints on a floor.
What is the main difference between OSB and plywood? The main difference is how they are made: OSB uses wood strands, while plywood is made from layers of veneer. This gives them different strengths and weaknesses, particularly regarding moisture resistance and appearance.
OSB vs. Plywood. While OSB (Oriented Strand Board) is generally cheaper than plywood, it is heavier and not as stiff as plywood and can result in soft squeaky floors under weight. The biggest complaint against OSB is that it doesn't handle moisture very well so it is more suited for indoor use.
OSB and plywood are both made from wood pieces, glues, and resins. They come in large sheets or panels, and each can be used for a variety of purposes. But, depending on your specific needs, one might be the better choice for your project.