I'll be doing a proposal today that will include a garage floor where some transmission fluid leaked, and that has all the other typical types of grease and oil. I haven't done much of this kind of work yet. I do have a supply of Hydramaster Soil Break. Is this suitable? I'd love to use what I have on hand. If the Soil Break isn't suited to this application, is there something I can get at Home Depot? That's the closest source we have where we live that's open on the weekend. I just viewed the video in this post: http://www.truckmountforums.com/hard-surface-care/14052-10k-sq-ft-of-concrete.html My method would be pretty much the same. Thanks.
I help a buddy sometimes with his Concrete Company and asked him about cleaning the concrete. He said to use Muractic acid mixed with water 1:1. Then dry it good and reseal.
Most prespray are OK at degreasing concrete. Something designed for concrete would probably work better, but the Soil Break you have will work OK. A lot fo the result will depend upon the surface of the conrete. Some is much more porous than other. If the stain is deep in the concrete, it obviously will be much harder to remove no matter what cleaning agent you use. Acid cleaners work by removing a thin top layer of the concrete. This may be alright if you want a rough surface, but it can mess up slick finished concrete. I would stick with the alkaline degreasers.
I asked about the etching like you stated and he said thats why you dilute it. He really knows his $h!+ when it comes to concrete, so I'm trying it in my shed floor here soon.
My guess is if you didn't follow Scotty's advice you have a nicely etched shed floor. Stick with the alkaline cleaners and make up the rest of your cleaning equation with heat and agitation. Do you have a spinner? Steve www.SFS.JonDon.com PS Big Billy Yeadon isn't as young and handsome as Scott but in this short video he shows exactly how to clean a heavily stained garage floor and without acids. http://sfs.jondon.com/6163/resource...its-by-renovating-your-customers-garage-floor