Apply only when air and surface temperatures are between 50 - 90Â°F (10-32Â°C) and humidity is below 85% to ensure proper drying. Do not apply to surfaces that will exceed 200Â°F (93Â°C). Do not use on galvanized steel.
ALL SURFACES: Remove all dirt, grease, oil, salt and chemical contaminants by washing the surface with a commercial detergent or other suitable cleaning method. Rinse thoroughly with fresh water and allow to fully dry. All surfaces must be dry at time of application. STEEL: Scrape and wire brush or power tool clean to remove loose rust, scale and deteriorated previous coatings. Use 7769 Rusty Metal Primer for sound rusted or clean metal before application of a finish coat. 7780 White Clean Primer is best for clean metal but may be used on sound rusted metal as well.