Soft Washing
Soft washing is how a house gets clean without getting hurt. Instead of blasting the siding, we apply a cleaning solution that kills the green algae, black mildew, and mold at the root, let it work for fifteen or twenty minutes, and rinse it off with a lot of water at about 90 PSI. That is less pressure than a garden hose nozzle. The growth is dead, so it rinses clean instead of streaking, and it stays gone a lot longer than a pressure-washed surface does.
We soft wash vinyl, brick, stone, stucco, Hardie board, painted wood, roofs, and fences. If it is a full house wash you want, that page has the whole process and the price range. If it is a roof, same method, different mix. The only surface we hit with real pressure is concrete, and that gets its own page under driveway cleaning.