The paints and inks contained in spray cans penetrate the porosity of the materials, making their subsequent elimination particularly difficult. The indiscriminate use of machinery capable of removing graffiti with a mechanical action often causes alterations or damage to the treated materials, with serious damage from corrosion or abrasion.
At the same time, the increasing number of urban regeneration interventions have created the need to protect street art works in our cities from normal wear and tear and vandalism.