Does anyone have a solution for removing black mildew stains from solid composite decking?

September 28th, 2009 | by admin |

The decking is less than a year old. The decking looks like a black spotted leopard. The spots are over the entire deck. We have tried cleaners made for cleaning composite decking, power washer, other mildew removers, all with no success.

a bleach solution will probably do it, but it will dry out surface to some degree.

  1. 6 Responses to “Does anyone have a solution for removing black mildew stains from solid composite decking?”

  2. By wartytoadjody39 on Sep 29, 2009 | Reply

    a bleach solution will probably do it, but it will dry out surface to some degree.
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  3. By Ted1948 on Sep 29, 2009 | Reply

    Not sure about black mildew but I use plain old white vinegar on green mildew. I keep some in a spray bottle out back.
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  4. By Pastels on Sep 29, 2009 | Reply

    try a 1:1 solution of bleach and water
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  5. By kristen9_23 on Sep 29, 2009 | Reply

    maybe a pressure washer w/ a higher PSI

    or maybe bleach
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  6. By Dolby21 on Sep 29, 2009 | Reply

    I have the same problem. Use a mixture of Bleach and water. This will remove most of the stains, but they will come back.
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  7. By whirlwind on Sep 29, 2009 | Reply

    bleach and water mixed.
    References :

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