Expert Rapid Matt CEZAR is an underlay made from high class extruded polystyrene (XPS) intended for all types of flowing floors, i.e. laminates and three layer-planks. Innovative connection of sheets in a harmonica model, assures fast and simple laying. Available in two versions of sheet width: 23,3 cm and 47,5 cm. Additional advantage is easy trimming of sheets. This underlay is a novelty on the Polish market. It is recommended to use it together with Cezar Basic Izopar – the vapour retarder film.