Concrete paver stains - Iron shellate stains

Setts and cobbles, tarmac, asphalt, resin systems, concrete whether it's plain, patterned or stencilled, gravels, etc.
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bluemax
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Joined: Wed Nov 04, 2009 6:18 am
Location: Meadow Springs WA

Post: # 42850Post bluemax

G'Day,
I am told iron shellate stains are difficult if not impossible to remove from pavers. Any advice Please?
Bluemax
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Tony McC
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Joined: Mon Jul 05, 2004 7:27 pm
Location: Warrington, People's Republic of South Lancashire
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Post: # 42861Post Tony McC

What have you tried to date? Oxalic acid may help.
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RAPressureWashing
Posts: 985
Joined: Wed Aug 15, 2007 3:02 pm
Location: Staines Surrey
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Post: # 42874Post RAPressureWashing

You could also try Citric Acid, But as with Oxalic Acid you really can't spot clean so will need to do the whole area/surface or you will end up with a poka-dot type paving. I would only use either of the above acids on white concrete though, you might have problems with coloured surfaces.
Roger Oakley BDA(Europe)Member 2006
R&A Pressure Washing Services Ltd
info@rapressurewashing.co.uk
www.rapressurewashing.co.uk
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