Wallpaper underlay sheet for the interior insulation of rooms

摘要

The invention relates to a wallpaper underlay sheet of extruded and completely expanded polystyrene foam for the interior insulation of rooms, which is fixed by means of an adhesive applied between its rear side and the wall or the ceiling of a room. The subject of the invention is distinguished in that the rear side (2) of the sheet (1) is provided with depressions (3) and/or elevations. <IMAGE>