Black Spots On Patio
DIY hints, tips and solutions to the removal and repair of marked and stained areas

chewit
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Joined: Mon Sep 15, 2008 12:53 am

Black Spots On Patio

by chewit » Mon Sep 15, 2008 1:04 am

Hi

Today i power washed my natural stone(untreated) patio. It was covered in green algae. Once cleaned I was left with black spotted slabs. The pressure washer could not remove and in fact they did not scratch off!

Please, someone save me from my polka dot patio :(

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