I just power washed this with a hot water washer and purple power cleaner. I am not impressed by the result. Any help on this is appreciated.
Thanks,
Wash Authority
Missouri
Not being able to be there and figure out what the stains came from I would say that three pepsi bottles should do it. One with oxalic acid, one with straight bleach, and one with a heavy sodium hydroxide mix. Three test spots should tell you which way to go. Hopefully you will be able to downstream something effective once you know what to use. BEWARE of using oxalic acid around glass; it will etch it.
That is a grease trail a caustic(sodium hydroxide) cleaner with some dwell should remove 90%. You guy have to wrap your heads around the fact you will not always be able to remove every stain every time. Restaurants are number 1 in stain retention due to typical paths walked by customers and employee. Concrete is hard,but at it base is a huge pourous sponge. When grease sits on concrete baking in the sun it gets pulled deeper and deeping into the pores.
I know how you feel ??? (WashAuthority), I hate leaving a site wishing it came out better. The funny thing is 9 out of 10 times the client is thrilled about the results and I’m sitting there looking at the concrete telling myself in my head that it looks like crap. But I’m some what of a perfectionate. Sometimes I just have to throw in the towel and accept that I did the best I could. And as long as they are happy then I guess it’s okay. STILL wish I could get the results I want with some of these jobs.
Thank you
Wash Authority
Missouri
There you go, folks. You have to set realistic expectations for yourself and for the customer.
This comes with experience and the only way to get experience is to get out there and clean stuff.
