Remove rust stains from concrete?

[PoorOwner]

I have some rust stains on the patio, what's the best way to wash it out?
I did a search and it points to TSP.. going to try that tomorrow.

What about wheel cleaner similar to IronX, or navel jelly rust remover?

 

[77thor]

I haven't tried it on concrete but a product called CLR is supposed to remove rust stains.
(Walgreens, Kmart, Walmart, all carry it)

 

[Dale Leeds]

I'd try the Naval Jelly. But rust is really hard to get out of the cement. In the past, I have sprinkled a thin layer of the powdered cement over the rust and let it dry. It is hard to match the color, though.

 

[bigbadktm]

Haven't had any luck getting rust out yet. CLR just doesn't do anything once the rust stain is set.

 

[JimVonBaden]

Haven't had any luck getting rust out yet. CLR just doesn't do anything once the rust stain is set.

Same here.

Jim

 

[jhelrey]

Works toilet bowl cleaner found at Walmart, etc

 

[lilredex]

Try wood bleach.....oxalic acid. If you can find it.

I have also had decent results from limestone (soup). Take crushed limestone and mix with water. Strain off the water and apply it to the rust. Results do vary though, depending upon the origin of the limestone. Have also tried (garden) lime mixed with water...just not the same.

Maybe there are some chemists out there......

TSP and CLR both duds in my experience. TSP is good in your washer (clothes)...does make a diff.

 

[jkwilson]

For small areas, try making a paste of crushed vitamin C tablets and water. Scrub, let it sit for a few minutes and then rinse well. If it lightens the stain but doesn't remove it, repeat.

 

[MrSnicks]

What about muratic acid?

Patrick

 

[LegacyIndustrial]

Muriatic is the active ingredient in the older commercial removers.
Be careful if you use it.


Sent from my iPad using Tapatalk HD

 

[kamesama980]

I used muriatic in my garage but I was cleaning the whole floor in prep for a floor coating. It'll get the rust out by eating the outer layer of concrete the rust adheres to. The result is a cleaner patch where it was applied OR if it's mixed weaker, won't remove anything.

 

[jkwilson]

What about muratic acid?

Patrick

It will take off the stains. It will also take off some concrete, so you have to be careful with how strong you put it on.

 

[DSMZealot]

I had rust stains from fertilizer and tried many things (including Naval Jelly) before using this stuff:

http://www.theruststore.com/Concrete-Rust-Remover-P66C1.aspx

It works amazingly well!

 

[bdamico]

what happens when you make a poultice and iron out? That's what you do to with certain stone rust stains

 

[ADSR]

I tried this stuff called.."the duke"

The stuff is like magic! It took out some pretty nasty oil stains.

http://www.ducan.com/cleaner-degreaser/default.php