Asked by: Renu Cardiga
asked in category: General Last Updated: 18th April, 2020

Can you use polyurethane on painted metal?

Clear polyurethane will not adhere to bare metal. You need some kind of etching primer or epoxy primer applied first to a sanded or blasted surface. (I was a DuPont certified auto painter for 28 years). What will help it adhere, would be to etch it some how in acid before you apply your polyurethane.

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Moreover, what is the best clear coat for painted metal?

  1. EVERBRITE Clear Coating – Best for Restoring Surfaces.
  2. KBS Coatings DiamondFinish – Decent Clear Finish.
  3. ProtectaClear Coating – Great Protection Option.
  4. Spraymax 2K – Top Application Clear Coat.
  5. Krylon COVERMAXX Spray Paint – Great Application Spray.

One may also ask, can you use Minwax polyurethane over paint? Both oil- and water-based polyurethane can be applied to latex/acrylic paint; however, oil-based polyurethane will create a yellow or amber hue, especially to light colors. To add durability without affected color, use a water-based finish.

Considering this, how do you seal painted metal?

How to Use Metal Sealants for Painted Metals. The surface should be well prepared before applying the sealant. Remove peelings from paint, rust, elements of corrosion, dirt, oil, or grease. It is recommended that you apply the sealant over a primer to enhance its resistance to corrosion and rust.

Can I use varathane over paint?

Varathane is a water-based polyurethane sealer that adds shine to wood and latex-painted surfaces. You can apply Varathane to any surface containing interior and exterior latex paint, including walls, tables, chairs and workbenches, once the paint is dry.

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