The desire to preserve the Keith Haring mural in Collingwood was a combination of community concerns and heritage values. Horizon scanning it is clear that the conservation of street art will be an increasing issue. Although some street art is ephemeral other murals are considered permanent and people would grieve their loss.
“Conservation of Wall Paintings, Murals and Street Art – an international perspective” was presented by Australian ICOMOS (International Council on Monuments and Sites) at the University of Melbourne on 18 February 2020. It consisted of two talks by Will Shank and Antonio Rava; the two conservators who worked on the Keith Haring mural in Collingwood.
Antonio Rava presented “Comparative Studies of Outdoor Contemporary Mural Conservation”. And Will Shank, “The Conservation of Contemporary Murals: How is it different?” Both spoke about the ethics and techniques of conservation of murals and street art and their work on the Keith Haring mural.
Conservation is about saving the life of a work of art. The scientific application of techniques to preserve, arrest and reverse deterioration.
Murals need protection from the sun, rain and, even the airborne pollutants of the city. There can be problems with plaster delaminating from the surface of the building or suffusing through the layer of paint. Rain washes out the soluble material and acrylic spray paints contain water soluble material. Black lines get hotter in the summer and cracking the surface of the paint. So do not have murals, in southern hemisphere, on north facing walls because the damage to the paint by the sun.
The ethics of art conservation are based on not doing anything that the artist does not approve or would not have approved. There are also, in some cases of street art, the moral rights of architects not to have their work altered, in which case Antonio Rava advocates “let it fade”.
Between 2010-2012 there was a debate about how best to treat Haring’s Collingwood wall. Public sculpture is considered to have a renewable surface, holes in them are patched and repainted regularly, but to what extent is the surface of public murals renewable? Could it simply be repainted?
Rava outlined problems with repainting Haring murals loosing the quality of Haring’s hand movement. For it is the line that is the most important part of Haring’s work. And on the mural Haring’s red lines were particularly faded; a transparent glaze over them meant that you can still see the original brush strokes.
The conservators also faced the problem of how to clean a large rough surface. In the end artist’s gum pencil erasers were used to remove a material on the wall that had built up over the paint.
What is being done to preserve the community murals of Melbourne from the 1970s and 80s? Will Shank, who had worked on walls from the community murals movement of San Francisco, reminded the audience that are no community murals in Chicago from the 1960s.
I am unaware of any other murals in Melbourne that are being conserved like the Haring nor of any plans. Most of Melbourne’s murals, street art and graffiti are only being preserved in digital photographs. What Melbourne’s street art murals would you mourn if they disappeared? And what plans should be made to conserve them?