Ok, so it looks like wand marks. House is painted wood. Used standard house wash, and X jet. I'll link to the pictures again as a refresher.
I have seen posted that "Sodium Hydroxide/Butyl mix down-streamed will allow for a low pressure rinse away of remaining oxidation."
Don't use down streaming, will the sodium hydroxide/butyl mix work via xjet, if it is indeed wand marks/oxidation.
Any other advice on a remedy for this? I don't go out to the sites, just help husband on occasion on things like this (research his ****ups).
Looking at having to repaint this guys house if we can't remedy it otherwise.
Thanks for your patience, and any advice you can offer.
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Ronda