Dirty concrete

[Stevez]

I am trying to pressure wash concrete sidewalks and drive thru pads at fast food restaurant grease and oil stains won't come out .any suggestions on type of cleaning solutions,procedure, to use?

 

[CHADD]

Purple power cleaner/degreaser will get that up. Can pick it up at any autopart store.

 

[Garage Flooring]

There are lots of threads about this. Tide and water seem to be a favorite. We also sell a concrete cleaning product as well as an oil stain remover.

 

[theamcguy]

I have tried a lot of concrete cleaners even the ones mentioned here but I have yet to find a cleaner that will remove 100% of the stain. They will make it look better, they will dim it, but in the end you can always tell there was a stain there. The problem is concrete is porous and the oil penetrates the surface and gets wicked down into the concrete. The cleaners remove what is on top but the oil that has penetrated below the surface is very difficult to remove.

 

[trbomax]

Muratic?

 

[STANIMAL]

Muratic?

Best cleaner that I have found .

 

[Shea]

Muratic?

Muriatic acid doesn't clean concrete like people think. It doesn't eat up the oil stain, it breaks down the surface of the concrete to profile it and leaves the oil behind to soak back in. It's a common mistake that leads to epoxy failure. You always want to clean your concrete including removing all oil stains the best you can before you use muriatic acid.

 

[thightower]

I've used the oil dry. Take a broom work it into the concrete, trick is a little elbow grease and a little time. I tried this on a floor that was about 40 years old, almost looked new when I was done.

 

[brownbagg]

muric also weaken the top layer concrete

 

[skulldrinker]

I used the gallon jug of HD degreaser from Sam's Club took the oil stain right off. Only about $10 a gallon. use it straight 100% strength.

 

[Garage Flooring]

The trick is to use an absorbent and a cleaner both. Regardless of if its a combination of oil dri and tide or the products we sell. The goal is to remove the stain but also to remove the oil that soaked in.

 

[LegacyIndustrial]

Steam cleaner? If not, use a concentrated de-greasing agent. The Big Box stores have plenty to choose from or vendors here on the journal.