What Type of Paint Can be Sprayed on Galvanized Steel?
Most any type of paint can be sprayed onto galvanized steel, provided the steel surface is pretreated with a particular type of primer, capable of etching metallic surfaces. Without this primer, galvanized steel will ultimately shed painted finishes.
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Cleaning
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Amateur painters tend to undervalue the cleaning process. Do-it-yourselfers should wash galvanized steel with a water-based degreasing cleanser prior to priming.
Primer
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Galvanized steel is ill-suited for adhesion. It requires a base coat of galvanized metal etching primer before it will accept paint. This type of primer is available in spray cans.
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Paint
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Although most any paint will adhere to properly prepared galvanized steel, acrylic or oil-based enamels are best suited because they provide strong durability and an attractive sheen.
Application
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Applicators should hold the can of spray paint or the spray rig nozzle eight inches from the galvanized steel as they apply.
Considerations
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Ordinary acrylic latex or oil-based primers are not appropriate for galvanized steel. These primers cannot etch the metal and will eventually flake.
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Resources
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