Why the base matters in Champ
Northwest county ground is rolling upland with the clay-heavy soils common around St. Louis, and clay holds water, swells, then shrinks. Fill ground of any kind settles unevenly for years. Freeze-thaw winters open the cracks that settlement starts. We check the base, compact properly and build drainage before paving.
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 Champ estimate is sized to the soil, the traffic and the drainage on your property.