Pressure washing and power washing are really the same thing. Pressure or "Power" is used to clean the surface. Soft Washing is sometimes also called Low-Pressure Washing. Soft washing involves very low pressure and the use of Eco-friendly organic detergents. Each method has its place. For example, when cleaning things such as vinyl siding, composite, Trex, and painted wood siding, only a soft low-pressure process should be used. However, when cleaning hardscapes and concrete, more pressure is needed.