On more than 425 m2 of balcony, terrace and loggia surfaces, panels in the format 40x40x3.8 cm are currently laid in cross joints on height-adjustable stilt bearings. The heights realized by means of the stilt bearings range from approx. 15 mm to 285 mm. Smaller height differences (less than 15 mm) were planned by means of pressure equalizing discs and joint crosses.