To be able to preserve the works of art according to the guidelines stated by the Cultural Heritage Agency Fondation Constant has given the collection as long-term loans to several museums in the Netherlands.
In case of damage or maintenance the foundation uses the following companies to handle the art works:
Works on paper
Lingbeek papierrestauratie, Haarlem www.papierrestaurator.nl
Schilderijen restauratie en conservering Marjan de Visser, The Hague www.restauratieatelier.com
Lydia Beerkens email@example.com
Specialised in Modern Art restoration (e.g. outdoor polyester sculpture, plastics and immaterial elements as light, sounds and movement).
Janine van Reekum metaalrestauratie, Amsterdam www.janinevanreekum.nl