GRAFFITI SHIELD F is a unique low gloss resin system which will prevent the permanent defacement of the exterior of your building surfaces resulting from aerosols & Texta felt pens. GRAFFITI SHIELD F acts against the penetration of moisture and airborne pollutants into masonry and concrete surfaces. GRAFFITI SHIELD F is an environmentally friendly, water-based acrylate polymeric system designed to provide nearly invisible protection against graffiti defacement, including attacks with aerosol spray cans. It also helps reduce algae build-up on treated surfaces. The protective components of GRAFFITI SHIELD F are activated through the evaporation of moisture and exposure to light. For optimal protection, the building surface must be fully saturated during application