I have applied Iron Cut to two vehicles on my asphalt driveway. I have noticed that Iron Cut leaves grey "runs" on the driveway. It seems to me that Iron Cut is oxidating the asphalt. Has anyone here experienced this issue? I'm about to re-seal the driveway, so I think I'll be doing the Iron Cut treatment on the street.
A quick google search tells me that there can be iron deposits in asphalt. So it most likely is reacting with that in the driveway.
it's good idea to wash or rinse your driveways with any type of wheel cleaner or all purpose cleaner.
Asphalt Driveway Asphalt is a petroleum-based material, and any oil or acidic cleaners left on an asphalt driveway will soften its binder system and eventually corrode the surface. Asphalt is generally sealed after installation and offers some protection from staining. Oil and grease stains on asphalt are notoriously difficult to remove. The best way to keep it clean is to be proactive by cleaning up spills as they happen and resurfacing when necessary. Do not use a cleaning product formulated for concrete on a blacktop surface, as it can worsen the stains and damage the finish. • Neutralize any acids with ValuGuard Acid Neutralizer (Step I) - diluted 1:10 neutralizes acids deposited on the asphalt surface • Use a coarse, stiff bristle yard broom; scour Optimum Power Clean or P21S Total Auto Wash (a d-limonene (citrus) based solvent into the surface. Thoroughly rinse the solution once you are done. Consult local regulation for volatile organic compounds (VOC) compliance. Contamination of surface waters arises from the residues discharging to storm drains, which in turn most commonly drain to rivers and lakes. Chief pollutants include phosphates; cleaning chemicals (degreasers, engine or wheel cleaners, acids, solvents etc) oil and grease. This is almost exclusively an issue for home/driveway washing. You should never assume that aqueous solutions can be disposed of untreated via the storm drainage system. Pending regulations are in place (Clean Water Act and Ground Water Pollution and various city ordinances) to limit the amount of contaminated water that is allowed to be discharged into storm water systems (i.e. street vehicle washing) always dispose of all non-biodegradable materials from your vehicle cleaning in a responsible manner.
Phil ... I always rinse my driveway after every wash. My driveway sits on an angle, so nothing puddles anywhere. I can see chemical runs in the areas where Iron Cut was dripping from the vehicles. Thanks for the information TOGWT ... I do have two gallons of Valugard's acid neutralizer in my garage. How soon should I be applying the acid neutralizer? I guess this also applies to Sonax which I also use on a regular basis.
