OSB or oriented strand board is a versatile and durable building board. It's construction is similar to that of Plywood. OSB sheet is a strong, versatile and reliable engineered sheet material designed to be used in a myriad of applications such as flooring and roofing. OSB wood sheet is manufactured by use of adhesives and layers of strands of wood (hence the name). It is these strands that give OSB its unique appearance. OSB is also used as an alternative to softwood plywood since it offers the same performance. As such, OSB is commonly used as sheathing materials on floors, ceilings and walls in today’s construction.