Had this issue back when I worked out of my garage, one day I decided instead of sweeping up the grinding dust, I would just blow it all outside and let the wind carry it away. Didn't work as well as I had hoped. About a week later, I had a nice orange driveway. It was due for a sealcoating, so I just let them take care of it. Wasn't there when it was sealed, so I'm not sure if they went right over it, or if they cleaned it somehow. Well now my shop is in a multi-unit complex with a large asphalt parking lot. I've been careful about making sure minimal grinding dust makes it outside, but it appears now that someone used the shop floor fan, put it in the back of the shop (facing the bay door) and went to town grinding away. The front of my unit is now bright orange, and I'm worried the association will either fine me, or make me pay to sealcoat the entire lot. I pressure washed it this morning and that got a lot of it off, so it's not as bright, but still orange. Anyone know any tricks to cleaning off the rust off? Preferably something relatively inexpensive and quick, as this may end up being an ongoing process.
Cleaning rust off asphalt driveway
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