Hammerite Metal Paint is specially formulated to perform as a primer, undercoat and topcoat. Should be applied directly to rust and will stop it from recurring. Specially formulated to perform as a primer, undercoat and topcoat in one. Use direct to rust. Solvent based paint. Very high VOC content. May produce an allergic reaction. WARNING Irritant Extremely flammable. Harmful to aquatic organisms. Always read instructions. Coverage up to 0.5 square meter.