The present invention refers a procedure for preparation of a reflective and oxide inhibiting coating consists of adding hard water, a series of compounds such as titanium dioxide, calcium hydroxide at 95%, an acrylic polymer, hydroxy methyl cellulose, sodium hexametaphosphate at 10% y monoethylen glycol, maintaining specific conditions of pH and viscosity during process. The resulting coating of this process, presents highly adhesive actions, as well as a high level of reflection to solar rays, which place it as a oxide inhibitor, that no require previous sealed when it is applied to steel and/or galvanize surfaces.