Protective Coating Types
A clear coat barrier which if vandalised can be removed (sacrificed) using a high-pressure washer which takes any graffiti with it.
Semi Sacraficial Coatings
A penetrating sealer which if vandalised the can be removed using a combination of graffiti removal solvent and high-pressure washer.
These work by creating a protective surface that spray paint cannot bond to and all that is needed to remove the graffiti is a solvent and scrubbing.