An underlayment made from extruded polystyrene (XPS) is a great choice for different types of floating floors, such as laminate and three-layer wood panels. Its purpose is to enhance the floor's longevity and make it more comfortable for users. These underlays are engineered to handle heavy loads and can compensate for any imperfections on the surface underneath. Moreover, they function as a protective barrier against mold, minimize the transfer of noise, and offer outstanding insulation properties.