Reversible graffiti-resistant protective barrier for all surfaces. WallGard Graffiti Barrier is recommended for protecting marble, granite or natural stone facings against graffiti drawn with spray-paint, crayons, markers, etc. WallGard Graffiti Barrier is also recommended for protecting cement-based facings. After WallGard Graffiti Barrier has been applied, it forms a film that covers surface pores without affecting vapour permeability, creating a repellent barrier against oils and water that prevents graffiti from penetrating deeply. WallGard Graffiti Barrier does not alter the appearance of the surface. WallGard Graffiti Barrier can be applied with a brush, roller or spray on surfaces that are thoroughly clean and sound, even when slightly damp.