About Pressure Washers for Brick Cleaning
For sound modern brickwork, 130–160 bar is fine. For old soft-brick walls (pre-1900) drop pressure to under 100 bar and stay 30 cm+ away to avoid eroding mortar.
Pre-treat with an exterior cleaner (Wet & Forget, Patio Magic) and leave for 24 hours before rinsing. Repointing may be needed afterwards on older walls.
Top picks: Kärcher K5 Premium, Bosch AdvancedAquatak 160 with surface cleaner, and Hyundai HYW3100P petrol for larger walls.