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Old 02-03-2008, 10:07 AM
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bigw bigw is offline
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what to use on concrete patio to remove rust stains from metal patio furniture?

can anyone tell me what to use on a concrete patio to remove rust stains from metal patio furniture? Should i use a chlorine bleach or what? I have a 4000,psi 4gpm cold water pw and a 20'' surface cleaner if this helps with your decision as to what chemical i should use.
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Old 02-03-2008, 02:40 PM
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wow thanks for all the responses
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Old 02-03-2008, 03:25 PM
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Happy Frog Happy Frog is offline
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Oxalic acid. (F-8)
You can buy it from Bob at http://www.pressuretek.com
Pressure wash first if needed then apply F-8 with sprayer and rince with water after 10 min dwell time.
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Old 03-20-2008, 02:04 PM
Don M. Don M. is offline
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oxalic is great,just dont get a face full from the wind blowing it back...
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Old 03-29-2008, 06:34 AM
jeffex jeffex is offline
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muriatic acid available at home depot in garden shop. be careful as it is acid . wear a mask and gloves as the fumes can choke you . pour it on the rust spot. only a small amount is needed and it eats the rust and etches the concrete. then you can powerwash the patio to look even www.deckdoctorpressurewashing.com
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Old 03-29-2008, 10:30 AM
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Third for the Oxalic. Be sure to do entire surface as toy will have very clean areas if done sporadically.
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