Wire brush off any loose rust, or sandblast heavy rust or mill scale. Remove grease and oil from surface with a thinner or petroleum solvent. Remove old paint with paint remover and clean with thinner. For best results use between temperatures of 64 to 86°F (18 to 30°C.) This product is designed for use only in a well-ventilated area. Use only in areas where fumes from this product will not come in contact with food or food products. Shake the can vigorously for 60 seconds after the mixing ball is loose. Spray in even strokes from a distance of 10 to 12” (25 to 30 cm). Spray no closer than 10 to 12 inches from surface. Spray light coats with smooth sweeping motion to avoid runs and sags. Allow 5 to 10 minutes before handling. Drying may be accelerated by applying heat, blown hot air or baking oven. One coat will be satisfactory. A second coat may be applied at any time to maximize the protection. After use, turn aerosol can upside down and depress valve button for several seconds to clear valve and prevent clogging.