High-pressure washing is a method of vehicle cleaning. It is a multi-stage process performed at a dedicated location, known as the car wash. The first stage involves conducting a pre-wash using hot soapy water to remove the majority of the dirt on the vehicle. The second stage involves the use of an active foam to clean tougher areas of dirt, while purifying the resulting pollutants. The third stage involves rinsing the vehicle with a high-pressure jet to remove the cleaning products and other dirt residues with cold, pressurised water. The final stage involves removing all remaining traces of limescale to give the bodywork a sparkling finish, using a jet of purified water.
This benefit of this type of cleaning process is that there is no risk of scratches to the bodywork, unlike traditional roller-based car wash systems.