Schönbrunn Palace, Perron Stairway, 1130 Vienna
The perron stairway at the center of the garden façade of the Schönbrunn Palace is attributed to Nikolaus Pacassi and Ferdinand Hetzendorf von Hohenberg who were responsible for the renovation work done in the eighteenth century. The 50-meter-long and 11-meter-wide staircase was built of Mannersdorf and Wöllersdorf limestone. Individual parts made of calcareous sandstone from the Zogelsdorf quarry were probably salvaged from the Neugebäude castle. Structural damage to the stairway resulted from a lack of funding and a weakening of the foundation due to the retrofitted sewer system. This led to ruinous settling. Over time barrier layers applied during earlier restoration attempts had led to frost damage. We began our work by removing fillings made of gray cement and mortar mixed with iron filings as well as indent repair with cast concrete blocks. Stainless steel reinforcement bars are bonded in place using a synthetic resin adhesive. The entire staircase was painted with several coats of whitewash as a protective layer.
Address: Schloss Schönbrunn, 1130 Vienna
Service: Stone restoration
Service period: 2004
Last updated: 07/07/2015 Imprint ©2015 Denkmalpflege G.m.b.H. & Mag. Klaus Wedenig Restaurierung & Konservierung