It depends on the type of surface you need to clean. Here are some good rules of thumb: Appropriate outdoor soft wash surfaces include: Vinyl siding Cedar shake siding Wood siding Roofs Pavers, brick, and tile Stucco Windows and doors Outdoor furniture Appropriate outdoor pressure washing (power washing) surfaces include: Stone Asphalt driveways Garage floors Sidewalks Patios Concrete Treated wooden decks It’s best to consult with a soft wash professional to determine which method is best for your particular surfaces.