types of plywood - the
more ply creates a thicker and stronger board. plywood has an odd number of plies and needs at least three plies. although specialty plywood can have any number of plies above three most plywood is categorized as 3-ply 5-ply or multi-ply. 3-ply is one of the most common types of plywood. it is about 2- to 3-millimeters thick and is generally.