Difference Between Non-Structural & Structural Plywood
The key features of the structural plywood are that it uses WBP bond or A-Bond. This kind of bond is a phenolic resin which can glue the adjacent veneers permanently. Hence, the strength of the board is super great. Not only that, but the WBP glue used for structural plywood is also water-proof. That is why we can use structural plywood for outdoor construction.
Non-structural plywood, however, is made with urea-formaldehyde which is an adhesive for interior plywood. The bonding strength is not as good as the phenolic resin used by structural ply.
Structural plywood has lower grade face veneers because it is unseen after the project is finished. While non-structural plywood are mainly used for architectural purpose.
