Why the base matters in Granite City
The city sits on the flat American Bottom floodplain along the Mississippi, protected by levees, and borders Horseshoe Lake on its southeast side. Flat ground gives water nowhere to go, and the clay-heavy soils common around St. Louis slow it further. Freeze-thaw winters then lift a wet base. We build slope into every surface and compact rock in layers.
The part of the job you can see is the last two inches. Ask what is underneath, how it will be compacted, and which way the finished surface drains.
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 Granite City estimate is sized to the soil, the traffic and the drainage on your property.