Softwashing next to roof?

[Sharpe]

@DavisPW

Instead of using dawn try using elementor.

Did I ruin this siding?

I’ve soft washed many many houses with little problem, it’s always rinsed perfectly and left it looking great. Last week I have a job with dark siding and mistakenly set the proportioner to too much sh (12.5%) and when it rinsed off it looked fine but when it dried it looks terrible. I’ve tried reapplying at lower concentrations, scrubbing, degreasers, and a magic eraser. Nothing seems to help. The water I’m using is very iron rich from a well (if that matters?). It’s vinyl siding and is about 3…