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Remove Iron sulphate stains from concrete

  • 07-04-2012 1:51pm
    #1
    zt-OctaviaN
    Registered Users, Registered Users 2 Posts: 396 ✭✭


    Hey folks,

    So i was putting down some moss killer i.e. iron sulphate and the wet ground / drizzle has caused it to run onto concrete path as its on a slope.
    Does anyone know how to remove Iron sulphate stains from concrete?

    I had the power washer and wire brush out but backed down as i didnt want it to run down onto my neighbours path or spread it at all.

    Lesson learned! :(

    Thanks
    N


Comments

  • #2
    dardevle
    Registered Users, Registered Users 2 Posts: 771 ✭✭✭dardevle


    .......


    is it spot stains or a running stain?

    citric acid usually works okay-can be difficult to find in concentrate form,

    try the juice of a lemon (proper lemon not the plastic bottle stuff)

    or white vinegar - apply to stain and leave for 5 mins then scrub with brush......if it looks like it is working then you can repeat the process as necessary.

    (oxalic acid does work but it is nasty stuff and hard to get -thankfully)

    ......


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