Why the base matters in Hettick
Ridge ground sheds water in two directions here, which helps, but the silt and clay soils common across this region still hold moisture near the surface. A freeze on a saturated base lifts asphalt. Layered compaction and a grade with a real outlet handle most of that before winter tests it.
When you compare bids, ask each contractor for three numbers in writing: the compacted asphalt thickness, the base depth, and what happens to the water. Those three decide how long the surface lasts.
Compacted asphaltTypically 2 to 3 in. for a car drive
Stone baseTypically 4 to 8 in., compacted
Drive on itUsually 2 to 3 days, longer in heat
First sealcoatTypically 6 to 12 months after paving
Typical ranges. Your Hettick estimate is sized to the soil, the traffic and the drainage on your property.