Insulation Corkboard is a natural product obtained by expanding Cork granules into blocks under high pressure and temperature, + 300oC bonded by the cork’s natural resin. After steambaking the blocks are cut to required sizes. Mainly used in insulation of roofs, ceilings, terraces, garages, walls, foundations, swimming pools, subways, doors, ships and machinery. Size: 50cm x 100cm x 50mm