Jan 12, 2022 · Asphalt Thickness: Residential –. Asphalt driveways need to be a minimum of 2” thick and are typically 3” (compacted). mmercial –. The finish urse of a parit lot, following the binder layer, should be a smaller and smoother stone at 1.5” thick for a total of 3”. For heavy duty traffic like, trucks, loading docks, or roadways