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I Removed Rust Stains on Concrete

Posted by sewhappy_2007 (My Page) on
Mon, Jun 22, 09 at 7:45

When I purchased my home two years ago, the front porch had two large rust stains where metal flower pots had been on each side of the front door. I had tried bleach, CLR and other rust removers with no luck. I recently had my driveway and sidewalks power washed and asked if they had any way to remove these stains - they said they would use their special rust removing chemicals but the stains were still there when they left.

I have finally TOTALLY removed the rust stains. I'm sure this is not a recommended use of the product, but 'The Works' toilet bowl cleaner, poured full strenght onto the stain worked like magic. I know, I know, the bottle warns to ONLY use on toilets - but it worked like a charm. This is hydrochloric acid, so you have to be very careful with it. I hosed it down liberally and made sure that nothing else would get damaged by any of the solution. My only problem now is that the area that used to be stained is so much brighter and whiter than the rest of the porch - a problem I'm happy to live with.


Follow-Up Postings:

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RE: I Removed Rust Stains on Concrete

Thanks for telling us what worked for you. I was afraid to read your post, it looked like Spam for some unknown product.


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RE: I Removed Rust Stains on Concrete

Neat! ...But how does that stuff do with toilets? (:


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RE: I Removed Rust Stains on Concrete

Also Barkeepers Friend will remove rust.....and straight clorox will clean up the rest of thedriveway.
Linda C


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RE: I Removed Rust Stains on Concrete

'The Works' is the best I've found for toilets. Also very cheap - $1 at Big Lots or The Dollar Store.

I had tried clorox, and Barkeeper's Friend didn't work either. I had just about decided I would have to paint before coming up with this solution.


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RE: I Removed Rust Stains on Concrete

How about muriatic acid for cleaning pools?


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RE: I Removed Rust Stains on Concrete

Muriatic and hydrochloric acids are the same stuff.
Pour regular muriatic acid on concrete & its reactions might scare you - the fumes probably ruin your nose and lungs,,, maybe eyes too.

Phosphoric acid for rust may be a much safer and better choice, but its not a totally safe thing either.


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RE: I Removed Rust Stains on Concrete

I used to use The Works in my toilets, but can't seem to find it anymore and have started using Easy Off Bam for the toilets. It works great for toilets and other grody jobs. Never thought about using toilet cleaner on outside rust. Thanks for the tip.


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RE: I Removed Rust Stains on Concrete

OMG! It worked very well. I have every rust stain remover that is available in my stores. I was skeptical but will try anything because I have such a big problem with my well water staining my concrete. Last night about 9pm after reading this about this solution, I searched in my cabinets hoping I had some Works. I did and put a 2' X 2' patch on my walkway; I woke up this morning to a pristine patch of concrete.

Thank you Sewhappy! I'm off to Dollar General to stock up. I'm thinking I will empty the bottles in one of my many gallon jugs of less than effective rust remover.


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RE: I Removed Rust Stains on Concrete

Mustangs - PLEASE be very careful using this in a large area. I used a very small amount for a concentrated stain. It is hydrochloric acid and can be very dangerous.


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RE: I Removed Rust Stains on Concrete

Thanks for the warning!!! I'm not real cautious when it comes to using cleaners.

I'm in the experimental stage. I purchased 4 bottles, protected myself, emptied them all into my pump sprayer, sprayed (down wind) the sidewalk and driveway. It works better in the shade rather than hot sun. I didn't rinse it, just let it dry over night.


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RE: I Removed Rust Stains on Concrete

Turns out that the newer "The Works" isn't nearly as effective as the older product. I used what I had on hand and it was amazing. Then I went to Dollar General, bought "The Works" in the new packaging and it was so-so.


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RE: I Removed Rust Stains on Concrete

Glad to get this tip. I have rust stains on some concrete that I hadn't started trying to get up yet, but when I finally do, I'll know now what to use!


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RE: I Removed Rust Stains on Concrete

Don't have a product name, but some guy w a local weekend talk show re home remodeling and repair, recommended a product for this recently - and it is something that is (according to him) available at the HW store and works very well, since that is its only purpose. So sorry, but I can't remember the name of it (though "rust remover" may have been in the title). I seem to recall that it's a powder and he instructed the caller to pour boiling hot H2O over the stain, then cover area w powder; let it sit for 30 minutes, then scrub w a brush and rinse off.

Sound familiar - anybody?


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RE: I Removed Rust Stains on Concrete

I was curious about the comment from one of the posters that Muratic Acid and Hydrochloric Acid are the same. Sure enough, that's the case. Here is a link that has lots of safety warning about using this stuff and alternate solutions for rust stains on concrete. I sure hope I didn't start something here that will end up hurting someone.

Here is a link that might be useful: Cleaning Concrete with Muratic Acid (Hydrochloric Acid)


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RE: I Removed Rust Stains on Concrete

Try Krud Kutter. Spray it on, wait a few, hose off. Stubborn stains may need a little scrub with a stiff brush. Works for me to get iron stains off brick posts caused by sprinklers. You can buy it at HD.


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RE: I Removed Rust Stains on Concrete

There are 2 products that are good for rust. One is Whink. It comes in a small brown squirt bottle. Be careful not to use it on a surface such as your washer, dryer sinks and such. Be sure to read the lable. Great for clothing, too. The other one is Iron Out. It is a powder. My hubby had left some steel lying on the cement and it rained. What a mess of rust. I had him mix some up with water and pour it on. It was gone. I run it through my washer, dishwasher, hot water heater and water softner. Really helps keep it free of rust. I also use it on my whites from time to time.

I use The Works, too. It is great stuff. I stock up when our grocery has it buy one get one free. Dollar stores carry it, too.

Susie


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RE: I Removed Rust Stains on Concrete

I just posted about my experience removing rust from concrete using lemonade kool ade sprinkled on and wet down. Let it sit for about an hour and scrub it off. It worked for me.


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RE: I Removed Rust Stains on Concrete

I try the works toilet bowl cleaner it did remove some of the rust but it did spot the walk way so i decide to go other way i do not need a spotted drive way or side walk


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RE: I Removed Rust Stains on Concrete

The Works (old formula in green bottle) worked perfectly on the rust stained driveway and side walk. The Works (new formula) was spotty. I immediately went to several Big Lots looking for any leftovers of the old formula.


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RE: I Removed Rust Stains on Concrete

I am moving from a rental house and the landlord insists I get it back to "original" condition but there are shrubs around the area. Will it kill those plants when I rinse the area I treated? What do I do?


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RE: I Removed Rust Stains on Concrete

After reading these posts, I went to the dollar store. They didn't have The Works, but I got something called Totally Awesome Lime, Rust and Calcium remover. It worked miracles on the side of my house!! I have tried so many things and spent so much money, I was thrilled that it got rid of the rust for a $1 and some elbow grease.

However, it didn't work on the columns in front of my house, that must be a different type of concrete, maybe plaster? They are more porus. I tried toilet bowl cleaner, which seemed to help a little but also started to ruin the pavers below, so I stopped. Does anyone have any ideas for the columns?

Thank you so much!


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RE: I Removed Rust Stains on Concrete

I have stains from washing off golf cart batteries one time in the driveway - they are orange and run all the way down to the street.

I found The Works at Walmart and Home Depot in a white bottle and just tested it on a 2' square section - it cleared most of it right off!
I poured directly onto the stain - no sprayer or diluting.
There is still some difference and the treated area is lighter/yellow than the rest now - it's not perfect but better than it was. I may try diluting some in a sprayer and treating the whole driveway and letting it sit longer next to even things out - or hire someone to acid wash (pool acid) the whole thing and power wash afterwards.

It was freaky because it bubbled up and was green - I let it sit 5-10 minutes but that was all I wanted to risk... no way I was going to let it dry.

I didn't scrub or even get near it - just bathe the spot in the stuff and rinse. YMMV. This post is 4 years after the original post.

This post was edited by karyn on Wed, Jun 12, 13 at 7:18


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RE: I Removed Rust Stains on Concrete

I used toilet bowl cleaner to remove some rust spots that I had on my driveway. The problem now is that I have dark marks leftover from where I used the toilet bowl cleaner.
Any suggestions on how to get rid of them. Normal soap and water didn't help.
Thanx!


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RE: I Removed Rust Stains on Concrete

All you need is muriatic acid. It takes less than 5 seconds and the stains that have been on our concrete for years are gone ! I have 3 photos to show how great it works !! We are having it all powerwashed tomorrow AM so it will look much better . I am surprised that no one that cleans concrete knew this :( I have asked and asked..then had a Duh moment and looked on GW !! Where else to find the answer to all questions :) c

before:

 photo IMG_6396_zpsd02bcf8e.jpg

during:

 photo IMG_6397_zpsfd4ee239.jpg

after:

 photo IMG_6398_zps4da90ee8.jpg

DH is going to retreat and use a brush to finish off some of the worst but it is AMAZING how much better it looks. You will definitely have to power wash after though. c


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