OSB, or oriented strand board, is a type of engineered wood product

OSB, or oriented strand board, is a type of engineered wood product that is commonly used in construction for various applications such as subflooring, roof decking, and wall sheathing. It is made by compressing strands of wood chips and resin together under high pressure and heat, creating a strong and durable panel.

OSB is typically made using softwood species such as spruce, pine, and fir, and it comes in various thicknesses and grades to suit different construction needs. It is less expensive than traditional plywood and often has a smoother and more consistent surface.

One potential drawback of OSB is that it can be more susceptible to moisture damage than other building materials, so it is important to use it in appropriate applications and to protect it from water exposure when necessary.