The durable and tough-surfaced overlay forms a waterproof surface which protects against chemicals and weathering and prolongs the life of the board making it ideal for use in formwork panels. TFF supplies Thermoplastic Plywood in a range thickness 9mm, 10mm 18mm and 21mm to suit any panel types and manufactures and can be sold per sheet or pre-cut and routed to suit the customer panel. This manufacture of this ply complies with highest international quality standards and the glue on each panel is checked by ultrasound screening.