About Pressure Washers for Driveways
Aim for 150+ bar at 8–10 L/min and a 30 cm+ surface-cleaner attachment. Petrol washers shine here — a Hyundai HYW3100P at 220 bar will clean a typical drive in under 90 minutes.
Don't forget the chemistry: apply a pressure-washer patio/driveway cleaner for 10 minutes before rinsing. This dissolves moss and biofilm so you're not just blasting at it.
Re-sand block paving joints after every deep clean to prevent slabs from rocking. Standard kiln-dried sand from any builder's merchant works perfectly.