Flatwork shows every season
Driveways, walks and patios collect tyre marks, leaf tannin and green film in the shade, and concrete tells you how long it has been since anyone cleaned it more honestly than siding does. Surface cleaners handle it evenly instead of leaving wand stripes.
Older masonry needs a lighter touch
There is a lot of brick and painted trim in and around town, and both punish high pressure. The method changes with the surface, which is the whole reason soft washing exists.
Damp air off the White River
River valley humidity keeps north walls and shaded soffits from drying, and mildew follows moisture. It shows up on the shaded side of a house long before the sunny side.