Rustins Quick Dry Red Oxide Primer can be used on all bare metal surfaces, interior and exterior. It is formulated with acrylic and special anti-corrosive pigments to prevent corrosion. Apply using a quality brush. One coat is normally sufficient, but second coat may be applied if required. The surface may be cleaned with a mild detergent solution or white spirit as necessary. Must be over painted with an undercoat before applying a top coat. Stir well before use. Dry time: Approx. 30 minutes, depending on temperature and humidity.Recoat: Approx. 4 hours.Coverage: 12-15m² per 1 litre.