A petrol-powered pressure washer that is perfect for cleaning the terrace. It weighs 30 kg, but the wheels makes it easier to move the machine.
From Electrical World
Draper Petrol Pressure Washer, 6.5HP
Wilko
Draper Expert 83818 Blue Petrol Pressure Washer 6.5Hp
This product is also available at 3 unverified merchants.