Building stains look the same in person as it does on Google maps, surface is stucco I’m just having a hard time identifying the stains as organic or not any help is appreciated
Sure.
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They look to be but no one can give you a positive answer because we aren’t the ones who can see it in person or do a test to really be sure. The picture is really small as well. Did you already bid on the job?
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@sgb thank you
@anon37135677 Didn’t bid yet, needs to be submitted within the next 2 day’s.
Any ideas on how to execute?
Thinking 50/50 mix , xjet and a lift
Thoughts?
Probably not the answer you want to hear but I’d say reconsider bidding on something like this for now. Only saying this because you seem unsure what is and what isn’t organic growth, and you don’t know how to execute such job. You want to be confident you can do and handle such job before you take it on. Sometimes you have more to lose than gain on certain jobs. But if you’re that set on doing it, do more research. 50/50 mix with an x-jet won’t get it done to the best of my minimal knowledge. I’ve washed a bit of stucco this year and use straight 12% no proportioner with my x-jet.
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Run by and do a test with a pump up sprayer. Probably about 3% net is where I would start. should clean up pretty easily.
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@anon37135677 I genuinely appreciate your help and advice
@Racer will do and let you know
Thanks
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Test spot for the win as Racer suggests. 
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Look like mold to me (light). It is run down from the exterior window sills. Water pools on the sill and then runs down keeping the “lines” wet for mold growth. See similar on brick homes around the windows all over the place here as well as on Stucco. As everyone suggested, do a test. Personally I would use a spray bottle with 3% and work up if needed to 12.5% to see if it goes away - stucco can be a pain at times. If you end up at 12.5% and nothing happens, then you will most likely know it can not be organic. Spray bottle - why? I can do an itty bitty titty spot that won’t be noticeable if I encounter any color change from the paint (which is another aspect of the test)
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