 Oil Stains |
PressureNet.net Pressure Washing Business Forum > General Pressure Washing Discussion > Concrete Surface Cleaning  |
 Jul 12 2009, 10:26 PM
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New Member Group: Members Posts: 5 Joined: 1-July 09 Member No.: 21,101  |
How much better does a hot water pressure cleaner clean oil stains compared to cold water machines? I am on a mission to completely eliminate oil stains from concrete surfaces. I have had random luck with oxalic not even expecting to have any results with oil stains. While the times I am hoping it will remove the stain it doesn't even lighten the spot. TSP has given me the same results at times it works and when it really counts it weems not to work at all. Does anyone know of exhibitions in the Orlando, FL area where I can go to see a hot water machine in action.
Thanks, Claude Asbury www.pressurecleaningbrevardcounty.com -------------------- Claude Asbury Handyman Service
www.pressurecleaningbrevardcounty.com |
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Jul 16 2009, 03:42 PM
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#2
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NOT THE OWNER OF THIS SITE!  Group: Members Posts: 1,224 Joined: 16-June 05 From: Graham, NC Member No.: 16 |
QUOTE (razzle @ Jul 12 2009, 05:26 PM)  How much better does a hot water pressure cleaner clean oil stains compared to cold water machines? I am on a mission to completely eliminate oil stains from concrete surfaces. I have had random luck with oxalic not even expecting to have any results with oil stains. While the times I am hoping it will remove the stain it doesn't even lighten the spot. TSP has given me the same results at times it works and when it really counts it weems not to work at all. Does anyone know of exhibitions in the Orlando, FL area where I can go to see a hot water machine in action. Thanks, Claude Asbury www.pressurecleaningbrevardcounty.com Ever worked on your car and tried to wash your hands with cold water rather than hot? Washed greasy pans with cold water? It IS possible, but efficiency & time on the job is a crucial element in this business. -------------------- |
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Jul 17 2009, 01:27 PM
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#3
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NOT THE OWNER OF THIS SITE! Group: Members Posts: 1,224 Joined: 16-June 05 From: Graham, NC Member No.: 16 |
After re-reading your post - you're WASHING - which means you need soap. Oxalic is NOT soap, it's an acid that will brighten concrete but it doesn't CLEAN. TSP is just soap - great prep for repainting but probably not the best choice for concrete stains, particularly oil. Need a stronger caustic.
Here's our theory - hot water with the proper soap will emulsify most dirt and stains - the soap lifts the ick up, then you rinse. If the concrete is still "blotchy", an application of oxalic acid will brighten the entire project and even it out. Cold water & wrong cleaner or just cold water cannot be expected to clean anything well, period. -------------------- |
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Nov 2 2009, 12:30 PM
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#4
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New Member Group: Members Posts: 3 Joined: 31-October 09 Member No.: 21,438 |
You need a degreaser (Behr -home depot), let dwell, hit it with a buffer with a grit brush, then pressure wash
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