How do I clean mouldy off a flagstone/sandstone patio? Power washing

by Trish

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Answered

Power washing is just destroying the rock!

3 answers

Amanda on Apr 13, 2018

Hi Trish. I would mix 50/50 bleach and water. Use a sprayer and spray it on. Let it sit and then rinse.

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- Trish on Apr 13, 2018
  
  thanks I will give it a try...have you tried this??
  
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- Amanda on Apr 13, 2018
  
  I do this on my concrete and also on my roof. It does work.
  
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Sharon on Apr 13, 2018

I would get Wet and Forget outside formula.

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- Trish on Apr 13, 2018
  
  ??Manufacturer? I live in Canada and thats not one I have seen here but may be able to order online
  
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- Sharon on Apr 13, 2018
  
  http://www.wetandforget.com/product_wet_and_forget_hose_end.html Think they carry on Amazon.
  
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Janet Pizaro on Apr 13, 2018

don not use bleach on flag stone.....Wet and forget is you best option

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How do I clean mouldy off a flagstone/sandstone patio? Power washing

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