How to wash a car with a pressure washer safely
A pressure washer is the best pre-wash tool you can own — and the fastest way to lift a stone chip. Distance, nozzle, angle.
45 minBeginner5 steps
Used properly, a pressure washer removes more grit than a hose while using less water, which matters when Rand Water is on restrictions. Used badly, it peels edges off stone chips, forces water past seals, blasts decals off and cuts tyre sidewalls. The rules are simple: wide fan, keep your distance, never point it at anything already damaged.
- 1
Choose the right nozzle
Use a 25° or 40° fan. Never the 0° pencil jet — it is for concrete, not cars.
- 2
Keep 30cm away from paint
Hold the lance about 30cm from paint and further from trim, rubber seals, badges and wrap edges. Get closer only on wheel arches and tyres, and even then not on the sidewall.
Bay tip · If a panel has a stone chip or peeling clear coat, rinse it from a distance at an angle, never head on.
- 3
Angle the spray
Spray at about 45° so water lifts dirt off the surface rather than driving it into seams. Avoid aiming straight into door shuts, window seals, sunroof edges and the engine bay.
- 4
Foam, dwell, rinse
Foam bottom up with the cannon, dwell three to five minutes out of the sun, then rinse top down in overlapping sweeps.
- 5
Contact wash, then final rinse
Foam is a pre-wash. Follow with a two-bucket wash, then a final top-down rinse. Dry straight away so hard water cannot spot.
Common mistakes
- Using the pencil nozzle
- Blasting tyre sidewalls and valve stems up close
- Spraying directly into door seals and electrical connectors
- Treating foam and rinse as a full wash
- Running the washer from an inverter or small backup battery during load-shedding — most units draw far too much
Safety: Never point the lance at people or pets. Keep the electric unit and connections dry and use an earth-leakage-protected outlet. Check your complex or body corporate rules before washing on site.