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patio slab cleaning

Discussion in 'In the Garden' started by pen4uk, 31 Mar 2020.

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  1. pen4uk

    pen4uk

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    Hi all, anybody got any ideas how to clean up patio slab? had a go with my jet washer, need something to dissolve the moss etc. someone told me vinegar ?
    any suggestions would be gratefully received
     
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  3. plastic_peanut

    plastic_peanut

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    Diluted thin bleach is recommended
     
  4. StephenOak

    StephenOak

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    Moss is a plant, you kill it rather than dissolving it. Once dead it can be brushed away.

    To kill moss you need a specialist product, the common ones are Patio Magic and Wet & Forget. Both of them have benzalkonium chloride (also known as alkyl dimethyl benzyl ammonium chloride) as the active ingredient, and you dilute them down to 1-2% for use.

    If this is a one off then get PM/W&F. If you need to do this regularly I would normally suggest buying some concentrated benzalkonium chloride, but at the moment that may be difficult as it is used in some hand sanitisers.
     
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