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Three inches is a great thickness for a residential asphalt driveway that sees minimal to moderate traffic from cars, SUVs, and pickup trucks. However, a thicker driveway can better withstand the weight of a heavier vehicle, such as a trailer or a recreational vehicle. If you drive a heavy vehicle on a thin driveway, you risk cracking and damaging it.

The average lifespan of an asphalt driveway ranges from 15 to 30 years, while concrete driveways last between 20 and 30 years, depending on several factors. Extreme temperature changes, cold weather, poor maintenance, and heavy traffic can all shorten the lifespan of your driveway. Be sure to reseal your driveway regularly to protect it from the elements and give it the best chance at a long lifespan.

Driveway aprons typically range between four and seven inches thick, though your town's building codes will likely have specific requirements. Additionally, you may need to add a layer of permeable aggregate in the excavation below your paved apron to ensure proper stormwater drainage.

When asphalt cures, it typically changes from a very dark black hue to a lighter, more matte gray color. Cured asphalt also won’t be tacky or sticky to the touch or emit any odors from the asphalt mix. Additionally, the surface of fully cured asphalt won’t deform under any pressure.