Abstract: There is provided a one coat system. The system, among other benefits, encapsulates lead paint, encapsulates and covers existing graffiti, prevents the leaching out of the harmful lead paint salts and graffiti from the encapsulated areas, and prevents the penetration into a substrate of future graffiti. The system includes a film forming mixture and a curing and activator mixture. The film forming mixture has a water based epoxy group of components, a water based polyurethane solution, a solvent based polyurethane group of components, and an oil based additive. The curing mixture has a water based epoxy group of components and oil ester based, iso-cyanate free, catalyst-curing agents. The film forming mixture is between about 93 and about 105 parts by volume of the system. The curing and activator mixture is between about 76 and about 83 parts of the system.