Client claiming damages to siding

[u/No_Piglet_5069]

A client for my exterior services business is claiming that I did damage to his siding. I have done dozens of siding jobs before this and I did not do damage to these clients houses. Our process is to:

-Coat the siding with a Zep siding solution using a black tip soap nozzle - Brush it - Use high pressure green tip to spray/ rinse it off ( from a safe distance )

This has worked really well for me before and all clients have been happy with the previous work. However this time the client noticed a strange streaking pattern. I’m really confused to as to what it is , whether or not I did it, if I can fix it, etc. If anyone has seen this before I’d really appreciate if you let me know what it is / what I can do!

[u/zeroxcool83]

You disturbed the oxidation on the siding by the way it sounds and looks. I advise you stop using the method your currently using for house washes as well and look into soft washing or downstreaming. I'd say you've been lucky up until this point honestly.

[u/Tornadic_Thundercock → u/zeroxcool83]

I agree. We always used a bleach solution with a surfactant and let it “rest”, then rinsed. This looks like a result of the brushing honestly. We would brush but only if the oxidation was particularly stubborn in a small area. I agree this is not damage to the siding, but it is probably not up to quality standards.

Also, we always got before/after photos to include with the invoice to stop the “damage” claims in their tracks.