SOFT WASHING:(Stucco,Hardiplank,Vinyl,Dryvit etc.)
Using the correct chemicals/detergents matched to the cleaning job and rinsing being done with only enough pressure to accomplish the task (Safely). This should be the primary technique used on your property. This is accomplished by higher volume GPM machines at a MUCH lower psi..
High Pressure Washing:
(When cleaning Concrete/stone and other hard surfaces)
Higher pressure can be used when necessary to clean surfaces that are more stubborn and can be safely cleaned with pressure. Only enough pressure should be used to accomplish the job.