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Cleaning patios

My sandstone patio needs refreshing as it has inevitably built up some algae and is discoloured etc. I have used pressure cleaning before, but I'd rather not do that again as from I read it damages sandstone by opening the stone's pores and making it easier for dirt etc to accumulate. 

Does anyone know of a patio cleaner that is organic, or as close to organic as it's possible for a liquid cleaner to be? I don't want to soak the patio in a liquid that will damage wildlife or plants etc.

Many thanks 


  • Pete.8Pete.8 Posts: 10,249
    Having been in the same situation as you, I tried this -

    I was skeptical but it has worked surprisingly well
    I've used it for 2 consecutive years on the paving around my greenhouse and block paved driveway and have been pleased with the results.
    I works quite slowly, but after 2-3 days it just starts to look cleaner and after a week or so there's a big difference
    Knowledge is knowing that a tomato is a fruit.
    Wisdom is not putting it in a fruit salad.
  • Lizzie27Lizzie27 Posts: 11,153
    I've used Algon which is organic I believe (which Patio Magic isn't) and which is half the price of Wet and Forget.
    North East Somerset - Clay soil over limestone
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