While we discuss this more in our section on panel types, it is important to know that we offer a variety of skin types from Drywall to Plywood and we can mix and match with a job or even within a panel. We can laminate many varieties of sheet goods; however, specialized materials have different strength properties and so are not appropriate for all applications. Our technical staff would be glad to discuss the details of your project and help you find the solution best for you. Panel manufacturers choose OSB over plywood for a variety of reasons. Better bonding and a wide variety of available lengths are at the top of the list. OSB is made of several cross-oriented layers of wood strands, which are glued together under heat and pressure. The outcome, a sheet of this material, performs like a single piece of wood. When we bond our insulation cores to OSB we have only our own bond, which is actually stronger than the OSB, to be concerned with. Plywood, on the other hand, is made of several sheets of veneer glued together. Plywood might have as many as six independent “glue lines” within its composition. If you bond something to plywood you are only really bonding to one of these layers of veneer. All of the bonds within the plywood are out of your control. Another big reason we choose OSB is the variety of available lengths. While plywood is limited to 8’ lengths, OSB is made in sheets up to 24’ long. Having the ability to produce panels in many different lengths provides flexibility in design and speed in construction. Speed and flexibility combined produce great economic benefits. The APA – The Engineered Wood Association rates Exposure 1 OSB the same as Exposure 1 plywood in terms of both its weather resistance and its nail pull strength.