Oil- and water-based metal paints come in large cans, for use with brushes or rollers, or aerosol cans, for spray application. Large cans may be the most cost-effective option when painting large, linear metal objects such as fences and backsplashes, but spray paints e.
Photo: rustoleum. Rust can form on any metal made of iron or iron alloys such as steel with prolonged exposure to air and moisture. Painting a radiator , outdoor grill, fire pit surround, or other heat-generating appliance? Regular oil- or water-based paint can blister and peel when exposed to the high temperature generated by these appliances during operation. Priming is a very important step in preparing metal for paint, especially if the surface will be exposed to moisture.
To select the right primer, the type of metal to be coated along with the desired appearance, performance requirements, and environmental conditions should be considered. Professionals recommend two types of metal primers: the rust converters mentioned above and galvanized metal primers. While a rust converter is ideal for preventing rust from recurring and making a rusted surface easier to paint, a galvanized primer is appropriate for metals e.
You can also find iron oxide and zinc chromate primers, which can be used on most metal surfaces, including interior and exterior iron and steel. Leave a Comment. Recent Posts. About Us. Careers at Performance Painting Human Resources. Contact us. Latest Blog Posts. Community Involvement. When finished, invert can and press nozzle to clear it of paint for future use. Let dry. Apply several thin coats of enamel, again keeping can moving.
At end of each coat, clear nozzle. Here we are using Dulux Metalshield Epoxy Enamel, which only needs priming if the surface is weathered or lightly rusted. In the past, epoxy paints were only available in a limited range of colours, but this enamel can be tinted to many colours to match. Sturdy scraper or 6-in-1 tool; wet and dry abrasive paper; wire brush hand and for cordless drill ; rags; brush thinner; Dulux Metalshield All Surface Metal Primer if needed ; Dulux Metalshield Epoxy Enamel in colour of choice here, Domino ; safety equipment.
Cleaning, sanding and painting thin metal leads to dust and drips, so place drop sheet under work. Remove loose paint with sturdy scraper or 6-in-1 tool, paying attention to joints where rust may be under paint. With most of loose material gone, use wire brush on cordless drill to brush surface.
Oil is a common contaminate found on most metal surfaces. Use a cloth and a detergent or solvent like denatured alcohol to clean metal before painting or priming. Wipe the surface thoroughly. If the cleaner leaves a residue, rinse with water. Rust and corrosion are common in ferrous metals but also found in other metals. Remove rust with a wire brush, then remove dust with a damp cloth. If the metal has been painted previously, remove lose or scaling paint with a dull putty knife. Prime your metal surface to ensure rust inhibition and effective adhesion of your topcoat.
Applying your primer and topcoat should be similar to how you apply paint to trim. Choose your topcoat the same way you chose your primer.
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