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Chip seal layers gravel and a liquid bitumen one at a time on-site, while asphalt directly pours a pre-combined mixture. Asphalt must be sealed, but it will last up to four times as long as chip seal driveways. Aesthetically, chip seal has a natural, rustic look compared to the traditional asphalt slab.

Gravel driveways are the most economical driveway material, followed pretty closely by asphalt and concrete. At about $1 to $3 per square foot, gravel is about a third of the cost of either of the more common alternatives. But, not everyone likes the look and feel of the material and may opt to pay more for something that looks better.

Driveways should be sloped with a minimum 2% slope—anything lower will cause precipitation and runoff to collect. A 2% slope is the equivalent of a 2-foot rise over 100 feet. One quick way to check the integrity of your driveway’s slope: no more than four inches of water should collect on the surface longer than 15 minutes after rain.

The cost to pour a driveway apron depends on the material and size. Concrete costs $3 to $10 per square foot, asphalt ranges from $2 to $5, and pavers are $5 to $15 per square foot. Additional expenses, like excavation, base material, and labor, can increase the total cost. For example, a standard 12x15-foot concrete apron could cost between $540 and $1,800, depending on local rates and additional work required. Always consult a local driveway paving contractor to get an accurate estimate tailored to your project.