Get matched with top asphalt driveway pros in Seward, AK

At a depth of two inches, a ton of asphalt covers around 80 to 100 square feet. However, the thicker the asphalt, the less surface area it will cover. That’s why measuring correctly is essential when estimating asphalt needs and costs to ensure you get enough material to cover your entire driveway, patio, or other asphalt surface.

While some areas may allow for a slope of up to 20%, this is often the maximum slope for driveways, with a few exceptions of up to 25%. Other regions may have a maximum of 12%, 15%, or 18%, so check with your local building department to ensure you’re laying a driveway that is up to code for your location.

Asphalt and tarmac are not the same thing. Traditional tarmac, short for tarmacadam, uses tar as a binder to hold crushed stone together. Asphalt uses bitumen—a byproduct of crude oil—to bind aggregate. Though tarmac was once a go-to for roads, asphalt has become the modern standard. And these days, most surfaces referred to as “tarmac” are actually asphalt. So, while the names may overlap, the key distinction lies in the binder—tar for tarmac and bitumen for asphalt.

On average, asphalt dries within 24 to 72 hours, meaning it’s solid enough for light traffic—walking and careful driving. Full curing—when asphalt reaches peak strength—can take anywhere from three months to a year. During that time, heavy loads and sharp objects can leave marks. Weather, asphalt mix, and thickness all affect how quickly it dries and cures. If you want your asphalt to last, treat it gently until it’s fully cured. For the best results, check with a professional asphalt contractor for their advice.