Bonds To Glossy Surfaces Without Scuff Sanding. Formulated With Proprietary Stain-Blocking Resins. Rust Inhibitive. May Be Used To Prime Ferrous Metal. Dried Film Is Mold And Mildew Resistant. May Be Applied To High PH Surfaces. Binds Moderately Chalky Surfaces. Approved For Use In Food Processing Establishments. Bonds To Wood, Plaster, Concrete, Gloss Enamels, Hardboard, Glass And Tile. Covers Approximately 450 Sq. Ft. Per Gallon On Smooth Painted, Non-Porous Surfaces; 350 Sq. Ft. Per Gallon On Rough, Unpainted, Porous Surfaces.