Power and roof pressure cleaning Miami both use pressured water to clean hard surface stains that are difficult to remove. Soft washing is a method of cleaning that does not use high-velocity water as a cleaning method. Soft washing is a cleaning method that uses force a little stronger than a regular water hose, and economically friendly chemicals that help remove stains. soft washing does not use pressured water to clean surfaces. Due to the low-pressure cleaning method, items and surfaces are preserved and endure less damage than if they were pressure washed.