Cleaned this commercial painted stucco building with x-jet at low pressure with a 4% mix. Building looked great, but when going the next day to check on it, now there appears to be a wet looking stain from all under the windows. When looking at the before pictures, these lines that are showing now are where the building previously had lines of mildew running from the windows. Not sure why the lines are still appearing and now as if they are still wet. I’d really appreciate some help on this.
May be aluminum run off from the window frames….SH won’t take that off if that’s the case.
Thanks for the reply! I had another person say a similar thing.
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