Mass Ply is a patented, veneer-based engineered wood product developed by Freres. Mass Ply is a mass timber panel assembled by combining thin layers of stress-rated Douglas Fir veneer, in the long and cross direction, creating a large-format wood platform that is then prefabricated to exact dimension with a CNC machine. Mass Ply is strong, fire-resistant, and lighter per volume than traditional building materials such as concrete or steel.