The Friedrichsplatz underground car park is centrally located in the documenta city of Kassel: it is directly connected to the pedestrian zone, the Königs-Galerie and the State Theater. Due to its ideal location, the parking garage is very highly frequented. The intensive use of the past years made a fundamental overhaul necessary. The choice clearly fell on the WestWood® Wecryl surface protection system OS 10 - 2.0 based on PMMA.