Vertical concrete panel streaks

JBurd

New member
Hey all, any tips on removing these stains... I tried a couple test spots. Hot water and pressure improved it a little bit. Soft-washing (typical house wash mix sh, sc and h20) knocked out the stain completely from the bottom of one of the streaks but only lightened it on the tops. There is an actual texture difference so I think the occasional water flowing over those areas may have worn off the cream coat/seal and left some mineral stains and a tiny bit of mildew.
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