Anti-graffiti coatings are protective layers applied to surfaces to prevent graffiti paint from adhering. These coatings create a barrier that makes it easier to clean off unwanted markings without damaging the underlying material. They are commonly used on buildings, public structures, and monuments to maintain their appearance and reduce maintenance costs. There are two main types of anti-graffiti coatings: sacrificial and non-sacrificial. Sacrificial coatings are designed to be removed along with the graffiti, requiring reapplication after cleaning. In contrast, non-sacrificial coatings allow for multiple cleanings without degrading, providing long-lasting protection against vandalism.