Finishing: Wet Painting

What is Wet Painting?

vehicle painter spraying white color on construction bucket

Wet painting a finishing process in which a metal product is coated with liquid paint usually using an air- pressurized spray gun or lacquer pump. Metal is cleaned then liquid paint is applied evenly to a thickness between 15 and 20 micrometers. Multiple coatings are applied to provide the desired thickness. Wet painting is extremely versatile and offers a large variety of colors and finishes. The wet painting process is commonly used on large or heavy items such as automotive exteriors.


Pros/Cons of Wet Painting


  • Wet paint provides protection against harsh elements and corrosion.
  • Since there is no heating involved in the process, wet painting is ideal for materials that cannot be heated, such as plastic.
  • Wet paint offers a thinner finish than powder coating, making it more appropriate for products that require a thin finish.
  • Wet paint finishes are smoother than powder coating.
  • Wet painting is less expensive than powder coating (particularly for smaller jobs).


  • Wet paint finishes are not as durable as powder coated finishes and may require future re-finishing.
  • Since it begins with a liquid, multiple coats may be needed to achieve the desired result.

Close-up of spray gun with red paint painting a car in special booth