Durability and strength are key to the ISI 1659:2004 ceritifed Block-Board. At Oswin, Block-Boards are made from kiln-seasoned and preservative treated high density timber, that is procured from the best sustainable plantations. The unbeatable ARTechnology gives the Block-Board added robustness and screw/nail holding capacity. Oswin Block-Boards experience no bending and warpage when work is underway.