sealcoat on sidewalk

[tomtucson]

Got a center with some stubborn asphalt marks, cart marks and spots, looking for something to loosen them up?

 

[Tony Shelton]

Heeeeeeeeet!

 

[Scott Stone]

kOH or NaOH in areally strong mix and some dwell time. Acid.might work as well.

 

[bears]

I had one with sealcoat on it the other day. I used D-lemonen mixed with a surfactant let dwell for ten minutes then I hit it with hot water. Worked great.