How do you remove rust from vinyl siding?

c4org

c4org

New member
the rust is from the ac unit the customer said.... i tryed taking it off with a light mixture of f18, i use that to clean the dark streaks off gutters and aluminum flashing works great if u don't use to much
id also like to know how to remove rust from cement... i did a a job a couple days ago and the cement near the railing had rust on it that i couldnt take off
 
Oxalic acid works as well. I have used it on vinyl quite a few times with good results, but you will probably have to clean all of the section where the rust is otherwise you will beable to see the REALLY clean spot left from the acid. Hey Larry I just picked up some of the iron out last night to give it a try on some concrete, whats your mix ratios and can you D/S or do you Xjet it. Thanks
 
cmturner said:
Oxalic acid works as well. I have used it on vinyl quite a few times with good results, but you will probably have to clean all of the section where the rust is otherwise you will beable to see the REALLY clean spot left from the acid. Hey Larry I just picked up some of the iron out last night to give it a try on some concrete, whats your mix ratios and can you D/S or do you Xjet it. Thanks
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I normally use 1 cup per 1 gal water in a pump up.
Sometimes I will sprinkle it straight and mist with water and brush in. Stuff works great on irion deposit stains from planters and from fertilizer as well.
 
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