Stubborn rust stains on driveways can be quite the headache. My name is Kevin and I am the owner of Tin Tipper Dumpster Rental. We are a busy dumpster rental company that mainly services residential home in cape coral. We stay on top of our dumpster by preventing rust spots on our customers driveway, however sometimes an unforeseen rust stain pops up. While it is in our rental agreement that this isn't our responsibility, I take our customer service very seriously. I always try to assure that when our customers are done with the dumpster rental, we have given them the WOW factor. As I write this tutorial on remove rust stains, Tin Tipper is currently at a 5.0 review rating on Google My Business!
I am writing this after having to take care of a customer due to a heavy stain caused by one of our new dumpster that had a pin hole in the front. No company is perfect, what you do to make it right is how you will gain customers for life.
I happened to be at Northern Tool and saw this product call Evapo-Rust. While this product is highly rated for tool and other metal item rut removal, it did not work on the paver driveway. I used this product straight out of the bottle and poured it onto the rust stain, I also used a metal brush to penetrate the product into the pavers. The end result from this product after 3 applications was only about a 30% rust removal. This bottle cost just under $10.
Here is what you will need to remove the rust stain completely off of the driveway, all of these items can be purchased from Home Depot :
My first attempt at this I figured I would just blast the stain away with a pressure washer. The rust stains on the pavers weren't phased at all by that attempt. Leave it stored away and follow this next few steps. I went to Home Depot to purchase some oxalic acid, however no one in my area sold just the powder concentrate. This product is however available online : Click here to see the oxalic acid powder product.
Mix the bar keeper powder approximately 1 cup to 1 gallon of warm water. Grab the brush and really scrub the product into the pavers and the heavy concentration of rust areas. I also spread powder directly from the container over the harder areas. this may take several coats for optimal rust removal. Remember that pavers and concrete are extremely porous, chances are the rust spots are really work themselves into the area.
As you can see from the picture above the driveway is starting to look normal however rust spots are still visible and the end product is not truly acceptable.
This product has been my go to end product for rust stains and spots on concrete and paver driveways. A 28oz bottle of this chemical will however set you back around $22. Due to price of this chemical, I like to remove as much as possible with Bar Keeper, which is a $2 product. Here is how I have found this product to work best for me. I do not dilute the product and pour it directly onto the heavy rust stained areas. The instruction on the product inform you that you should rinse off the liquid after 2 minutes. This in my opinion is way to short of a period and doesnt allow the chemical to penetrate the rust spots that have worked there way into the porous pavers. I usually leave the chemical on the rust stains for at least 20 minutes to 35 minutes. I will also lightly scrub the CLR product throughout the area to ensure complete rust stain coverage. While I did not take a video of this process, take a look at the following YouTube video.
This clean up took me just over an hour. In my opinion, I will do whatever it takes to keep my dumpster rental customer completly satisfied with our service. Below you will see the finished product which is a completely removed rust stain!