One of the most popular surface options for a Greenix Panel is OSB. OSB is a sheet made with layers of wood "strands" that are aligned, formed into boards, and pressed with an exterior-grade adhesive resin. They have been used in construction since the 1980's as an external surface on stud walls.

OSB is manufactured from sustainable, fast-growing trees such as aspen poplar, southern yellow pine, mixed hardwoods, and other suitable species. Using OSB as the external and internal surface of a Greenix Panel provides a complete structural panel, fully engineered for strength and durability.