Known issueFixUpdated · 6 replies on Steam
PowerWash Simulator 2: Why is the surface washer so broken (Workarounds)
Short answer
No confirmed fix yet. Players suggest: It's easy to test, try the roof of the art deco house where the layers overlap.
The problem
It just won't clean some surfaces. But no, we can't fix that. We have more cosmetics to make, but not for the washers. Tired of washing a surface and it just won't wash certain spots for no reason
What players suggest
I have to either switch tools, move at it differently, or literally raise it up off the ground. It's easy to test, try the roof of the art deco house where the layers overlap. Or the spa pools in the ski resort
From my experience, the surface washer is only viable for floors and other completely, utterly flat surfaces. If there's something like a thin trim that's tall enough going through, it'll freak out. Also, doesn't seem to spray constantly, but rather in a pulsating manner that is the main reason it leaves spots when going too fast. Its main advantage is that the stain cleaning power is maximized…
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Source: original Steam Community discussion. Quotes are shortened; all credit goes to the posters.