Vapour, or wet blasting is defined as “the use of high pressure compressed air mixed with an abrasive media within a water solution to achieve a high-quality finish on a number of different surfaces.”

The addition of water gives vapour blasting a much more consistent finish over dry blasting. It does so because the abrasive material is buffered by the water, also creating a smoother finish. This is especially important when the surface being vapour blasted is highly sensitive, such as engine cylinders or polished parts.