White Low-Odor Oil-Based Interior Primer Spray, Sealer, and Stain Blocker When painting, treat galvanized metal as non-ferrous. KILZ Original 13 oz. The metal needs to be primed with anti-corrosive primer and painted with rust-proof paint for metal surfaces. Preparation is key to preparing metal for paint adhesion and long-lasting protection. Step 1 Scrub away all rust, existing paint and dirt with a wire brush and steel wool. Painting outdoor metal is not difficult, but you must use the right kind of paint made specifically for the outdoors. It’s durable enough to be a great choice for outdoor … Then sand the surface … Like any surface, metal will often contain contaminates, including existing paint, rust and oil. These impurities can inhibit adhesion, therefore must be removed before painting. TCP Global Brand Professional New 2.5mm HVLP Spray Gun- Great for High Build Auto Paint Primer - Metal Flake application and any heavy bodied paint or Primer Material -with Air Regulator 4.4 out of 5 … Step #2: Prepare the Metal. The ColorMaster Paint K05160202 from Krylon is a versatile spray paint for metal that’s also suitable for use on other surfaces such as wood, plastic, and many more.