JACKODUR is a top-quality German made thermal insulation material made of extruded polystyrene foam (XPS) – compression proof, dimensionally stable, and closed cell and therefore moisture and rot resistant. JACKODUR thermal insulation is available in a wide range of thickness and comes with a ship lap edge profile. The lambda values of the entire range of JACKODUR XPS products are very low, especially with large thicknesses. Thanks to these outstanding features and the wide range of available versions, JACKODUR thermal insulation is ideally suited for use in Floors, Walls, inverted roofs and building perimeters. At the same time, JACKODUR is also an excellent choice for almost every other application in building construction. Jackadur KF300 has a compressive strength of 300Kpa * This product is well suited for application in swimming pool walls and floors. Other possible alternatives are Polyfoam Extra, Styrofoam 300 - Please check with our technical for advise. Other sizes available on request