I would like to put asphalt over my 50 year old concrete driveway, It has sagged a bit in the middle and now holds water. It has some sort of very thin coating on it( looks like 1/2 inch asphalt ) that is flaking off. This coating, according to my neighbor, was all the rage a couple of decades ago. The concrete seems to be OK, its cracked at the street end.
I've talked to a couple of contactors, one will pull a string to verify slope and will cut out the concrete near the garage to get a smooth transition between the garage and the driveway. One will just make a berm there. Neither will take up the flaking coating. He said I would get 2 inches of asphalt.