European Informalism and Art Brut as pioneers

The concept of the wall as a canvas does not arise in isolation, but as a response to the saturation of the metropolis. Before Sarah Grilo turned urban typography into poetry, other pioneers had already understood that the wall is the raw record of collective existence, accumulated layer after layer. The first antecedents are to be found in European Informalism and Art Brut, where figures like Jean Dubuffet discovered in the walls of Paris -scratched and worn down by the war- a truth that refined painting concealed. This impulse was joined by French affichistes, such as Raymond Hains or Jacques