Polyurea over crack filler?

[psilocybe]

I diamond grinded my concrete garage floor and used some Legacy Industrials HD 821 Gel Crack Filler (which I believe is an epoxy). There was a delay in application of the polyurea and the HD821 has since long cured. I am wondering, do I have to re-grind or sand the HD821 now before laying down the polyurea? And if so, which? The product is since discontinued and the video instruction/blog instruction page say nothing about this...

Thank you

 

[Shea]

If you ground the repair flush with the concrete, then you are good to go. If not, then rough up the surface with some 120 grit sandpaper or equivalent.