New asphalt goes through two stages: drying and curing. Drying typically takes 24 to 72 hours, after which the surface is solid enough for light use like walking or careful driving. While you may be able to park on it after 72 hours, the surface is still soft and should be treated gently. Full curing is a much longer process, taking anywhere from 30 days to a full year for the asphalt to reach maximum strength. During this extended curing period, the asphalt is susceptible to damage from heavy vehicles, sharp objects, and high temperatures. Factors like weather, the specific asphalt mix, and application thickness all influence drying and curing times. For the most accurate timeline and to ensure the longevity of your new asphalt, it is always best to consult with your installation contractor for their specific recommendations.

An asphalt overlay or top coat costs between $3 and $7 per square foot. For a standard, single-car driveway that’s 10 feet wide and 20 feet long, that’s a total of between $600 and $1,400. For a two-car driveway, you’re looking at a total of between $1,200 and $3,000.

Gravel is the cheapest way to extend a driveway. Gravel is an affordable, practical option that’s easy to install and perfect for DIY projects, helping you save on labor costs. It can be quickly spread and leveled to create extra driveway space without heavy preparation. While gravel doesn’t offer the same durability or finished look as concrete or asphalt, its low cost makes it ideal for budget-conscious homeowners who want a functional solution without overspending.

When comparing installation costs, asphalt is often less expensive upfront than concrete. Asphalt prices typically range from $7 to $15 per square foot, while concrete can range from $3 to $18 per square foot. However, long-term costs should also be considered. Concrete driveways generally last longer (up to twice as long) and require less maintenance, which can make them more affordable over their lifespan. While asphalt has a lower installation cost and is easier to repair, it requires more frequent maintenance, such as sealing, which can add up over time. Therefore, while concrete is more expensive initially, its durability may offset the cost in the long run.