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• PRO

  Phil Voice January 15, 2009 at 7:34pm

  I agree with Paul
  
  I have seen too many ruined drives, paths and patios caused by a too aggressive use of pressure washers.
  
  Even paving can deteriorate eventually as the small surface particles are loosed and blown out. Ironically, as the surface becomes more open it becomes a better anchor for moss.
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  danny coulton January 15, 2009 at 7:36pm

  try the jeyes first i believe it is a tar acid and will clear moss quickly if done as directed. It further lightens over the next weeks any darkness as it loosens the dirt.
  Jetting will leave awkward lines that almost advertise the fact that you have jetted.
• PRO

  Phil Voice January 15, 2009 at 7:39pm

  Kerrie,
  
  I am not saying that you would even try, but never use sulphate of iron on any type of paving or tarmac as it will leave serious rust stains that are nigh on impossible to shift.

  Try MMC Pro...available from Amazon
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  Kerrie John-The garden design Co January 15, 2009 at 8:08pm

  The surface is tarmac, also elderly and there's lots of it!
  
  Jetting sounds like a complete no no. Didn't realise it made such an impact on tarmac.
  
  Ecochem sounds like a great option, safer than Jayes Fluid which does stink and not very kind to either surrounding plants and her small dog.
  
  Phil, don't know about sulphate of iron but will steer clear.
  
  Thanks guys, now have to tell my Mum that she was right, AGAIN!
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  Kerrie John-The garden design Co January 15, 2009 at 9:18pm

  Thanks for the pointers Nicholas I will give it a go.
  
  Looks like it is going to be quite hard work, "scraper,hoe, shovel or other suitable tool, then Sweep it all away" - there really is LOTS of tarmac!