June 2021: Possible contamination

Possible contamination during clean-up operations at the top roof of the Sphinx building in summer 2021.
Technical data sheets of used material:

• Nanocret R4 Rapid
• Wecryl 121 A
• Wecryl R 230 thix
• Wecryl 288
• Wecryl 298
• Wekat 900
• Weplus Reiniger
• Weproof 264