Soft washing vs. pressure washing a house
Pressure washing is force. A commercial machine puts out enough pressure to cut stucco texture, lift paint, drive water behind siding and tear a screen. It is the right tool for concrete and the wrong tool for a house. Soft washing is chemistry. A cleaning solution goes on at close to garden-hose pressure, kills the algae and mildew, and gets rinsed off with plain water. The house is not blasted, it is cleaned.
The difference shows up in a year. A pressure-washed wall looks clean the day it is done and grows back fast, because the growth was knocked off the surface but not killed. A soft-washed wall stays clean longer because the organism is dead down in the pores. If anyone quotes you a pressure wash on stucco, ask them what pressure and watch what happens to your window seals.




