concrete chemical solutions?

[JAYJACQUIE]

hi guys,and gals, I have just stated my pressure washing business for about two weeks now. just got a call to clean two concrete driveways almost side by side. concrete is about five years old, my problem is there both real bad, grease,oil, mildew tire marks you name it. they work on cars so thats why the mess.. i dont have any pics sorry.. I have a cold water 4000 psi 4000gpm and a 20' whirl away.. what chemicals do you pros recomend??? and how do i approach it? i heard and read about many chemicals but sounds like some are for different stains..is that true... heard of f-18, clean cret, most people mix...among many others... what do you guys suggest????


thanks for all the replies, everyone is greatly appreciated!
im a newbie and dont mean to get anybody upset with my question or repeat question trust me ive searches many forums for many hours and just a little confused

Im from palm springs california and the weather is great right now! lol

 

[BUNN]

Since you do not have a heated PW, you should consider renting one for this job. Nothing takes the place of heat, for grease and oil removal, IMO.

 

[Russ Spence]

you can do it w/o but in reality hot water is needed for this

 

[Chris Francis]

Bunn I once looked into renting hot water system from Sunbelt I think they are called and it was close $200.

Russ I know flat work is what you are great at so can you explain to us what use with cold water system. I know you are fan of soda beads are they hard to learn to use I know they dangers.

 

[Scott D.]

I was at home depot the other day and they had a Landa hot water unit for rent for $60 for 4 hours or $98 for 24 hours. I think 2600psi and 3 GPM. Not sure how much you charge for driveways, but if you can do both in under 4 hours, it should be worth it if you can find a rental for that price.

 

[Chris Francis]

That is not bad I ask HD if they had any to rent out they said no but at Lowe's rent center had one that was for 200 but think that was having it shiped from tampa to smaller city. my city rent centers alot of garden and few home repair stuf

 

[JAYJACQUIE]

thanks everybody for all the replies!! just starting out and sooner or later i will get me a hot water. my neighbor used re-krete the other day and it worked great.. it got rid of all of the oil and grease.. looked brand new.. its only been two days though and well see if any resurfaces.. i wish i new he was doing that, i would of took pictures of before and after.. ill tell you if they dont resurface im definitly a believer and will add soom to my arsenal!