Spray painting is a painting technique where a device sprays a coating (paint, ink, varnish, etc.) through the air onto a surface. The most common types employ compressed gas—usually air—to atomize and direct the paint particles. Spray guns evolved from airbrushes, and the two are usually distinguished by their size and the size of the spray pattern they produce. Airbrushes are hand-held and used instead of a brush for detailed work such as photo retouching, painting nails or fine art. Air gun spraying uses equipment that is generally larger. It is typically used for covering large surfaces with an even coating of liquid. Spray guns can be either automated or hand-held and have interchangeable heads to allow for different spray patterns.

Advantages of using spray painting:

• A uniform thin coating is produced
• Costs are cheaper
• Available in a wide variety of colours
• Easier to touch up
• Faster production time

Although spray painting has many advantages, it also has disadvantages as well, including:

• Hard to achieve thick coating layers
• Easily get scratch but easily touch up