Answer by Ecnerwal for Lower level black brick staining
Looks like mold/mildew due to rain splash from lack of (or clogged) gutters.Generally, the staining is not uniform from top to bottom.
View ArticleLower level black brick staining
What might be the cause of the lower level black brick staining, shown on the pictures? What is the remedy? I did not get up close to look at these, rather saw them when I was posting neighborhood...
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