[Geary]

The best attachment ever for pressure washers is the "surface cleaner" linked below. Meant for sidewalks, but works extremely well on siding. It cleans evenly, rather than leaving streaks .. and the job is done in one-quarter the time.

https://www.ebay.com/itm/RYOBI-SURFACE-CLEANER-12-In-Electric-Pressure-Washer-Driveway-Sidewalk-Cleaning/123083447818?epid=19016538474&hash=item1ca8585e0a:g:hPcAAOSwWwVa1bbc