High density chipboard finished with a shining flush UV lacquer which is especially designed for concrete formwork. The UV lacquer is composed of 3 layers (1 pore-filler layer and 2 finishing layers), is resistant to lye and is waterproof. The board has a particularly screwable core, is MUF glued and subject to minimal expansion and swelling in conditions of high humidity. The board is easy to saw and has low formaldehyde emission (E1 class).