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  1. #11
    Senior Member
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    Default Re: black mould on exposed aggregate concrete

    *I'm going...
    It is upsetting to see the own text errors

    Found some more info here.
    Last edited by notechyet; 12-01-2021 at 04:53 AM.
    "B.M. The government cannot give to anybody anything that the government does not first take from somebody else": The working class! Let's make sure we vote next time!

  2. #12
    Senior Member 1101's Avatar
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    Default Re: black mould on exposed aggregate concrete

    wet & forget is more like a anti-fungal anti mold.
    It takes a while to kill it & wont 'clean' the dead mold .

    I'll bet 30sec is more like Janola . It will bleach the black areas back to white.
    2 Litres of janola is very cheap at the supermarket.
    Janola works better for cleaning concrete .

  3. #13

    Default Re: black mould on exposed aggregate concrete

    Quote Originally Posted by 1101 View Post
    wet & forget is more like a anti-fungal anti mold.
    It takes a while to kill it & wont 'clean' the dead mold .
    mould, not mold which is Yank and this forum is Kiwi. Get it right!
    It is better to wear out than to rust out.
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  4. #14
    Awaiting Enlightenment R2x1's Avatar
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    Default Re: black mould on exposed aggregate concrete

    Mould is what grows in the minds of pedants.
    Mold is the curable stuff.
    Entropy is not what
    it used to be.



  5. #15
    Photographic enthusiast Misty's Avatar
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    Birkenhead, North Shore, AK (amongst the bush)
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    Default Re: black mould on exposed aggregate concrete

    Oxygen bleach is the recommended thing for timber(to not damage the fibres), but would work on concrete too. However, ordinary bleach should be okay, I guess, on concrete as there is less chance of damage.
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