What to Expect During Asphalt Paving in Huntsville

How does Asphalt Paving work?

Asphalt paving is a five-step process: grade the base, lay a gravel foundation, compact it, spread hot asphalt, then roll it smooth. The whole thing is done with heavy equipment and takes a crew of four to six people.

Start with the dirt. If the ground underneath isn't solid, your driveway will crack inside two years. That's why the first thing we do is cut out any soft spots and bring in crushed stone. Huntsville sits on a lot of clay, and clay moves when it gets wet. You have to get down to stable soil or build up a thick enough stone base to float on top of it.

The gravel layer is usually four to six inches deep, sometimes more on a sloped lot. We spread it, wet it, and run a vibratory roller over it until it's hard as concrete. That base is what carries the weight of your truck or SUV. The asphalt on top is just a wearing surface. If the base fails, the asphalt fails with it.

Hot asphalt comes from the plant at around 300 degrees. It's dumped into a paver that spreads it in one smooth pass. The crew follows behind with hand rakes to fill in the edges and low spots. Then the roller goes over it while it's still hot. That heat is critical. If the mix cools too much before rolling, it won't compact right and you'll get a soft, ravelly surface that sheds pebbles for years.

The finished thickness is usually two inches for a residential driveway. Some contractors try to get away with one and a half. Don't let them. Two inches gives you enough room for a second layer later if you want, and it holds up better to Huntsville's freeze-thaw cycles. We get cold enough in January that water gets under thin asphalt and pops it loose.

Sealing is a separate job. Fresh asphalt needs at least six months to cure before you put sealcoat on it. The oils in the new mix have to oxidize and harden first. If you seal too soon, you trap those oils and the surface stays soft. Your tires will leave ruts in the summer.

Step-by-step: what to expect

Expect a crew to show up early, usually around 7 a.m. They'll spend the morning grading and prepping the base, then lay asphalt in the afternoon. The whole driveway is drivable by evening, but you should keep heavy vehicles off it for a day or two.

Day one starts with a skid steer or a small dozer scraping off the topsoil and grass. If you have an old asphalt or concrete driveway, they'll tear that out too. Concrete gets hauled off. Asphalt millings can sometimes be recycled into the base, but that depends on the contractor. Ask before they start.

Once the dirt is bare, they bring in a dump truck full of crushed stone. Number 57 limestone is common around here. It's about the size of a quarter and it locks together well. They spread it, grade it to the right slope, and compact it. The slope is important. Huntsville gets heavy spring rains, and standing water on a driveway will find its way through the asphalt over time. A good crew gives you a crown in the middle or a consistent pitch to one side.

The asphalt truck shows up mid-afternoon. It's a dump truck with a tarp over the load to keep the heat in. The paver is a separate machine that looks like a big metal box on wheels. It rides on the gravel base and lays a ribbon of asphalt that's exactly the right width and thickness. The crew walks behind it with shovels and lutes, which are long-handled rakes, to smooth the edges and fix any gaps.

Rolling starts as soon as the paver has laid about twenty feet. The roller is a heavy steel drum that vibrates. It makes several passes over every inch of the new asphalt. You'll hear it thumping as the vibration shakes the stones into place. That sound is normal. If the roller is just sitting still or moving slow, the asphalt might be cooling too fast.

They finish by hand-tamping the edges where the driveway meets the sidewalk or the garage floor. That's a detail a lot of homeowners miss. A sloppy edge lets water run under the asphalt and wash out the base. A good crew will cut a clean joint and pack it tight.

After they leave, you'll see a dark, smooth surface that looks finished. But it's still warm. Don't walk on it for at least an hour. Don't park on it for 24 hours. And don't turn your steering wheel while the car is stopped on it for the first week. That twisting motion can scuff the new surface.

How long does Asphalt Paving take?

A standard residential driveway takes one full day. Prep and grading take the morning. Laying and rolling take the afternoon. Bigger jobs, like a long private road or a parking lot, can stretch to two or three days.

The biggest time factor is the base prep. If the existing ground is solid and level, the crew can grade it in an hour. If there's a lot of soft clay, they might have to dig out three feet and bring in fill. That adds half a day or more. Huntsville's red clay is notorious for holding water. I've seen driveways where we had to haul in twenty tons of stone just to get a stable base.

Weather also matters. Asphalt can't be laid in the rain or on wet ground. The hot mix will cool too fast and the water will turn to steam, creating bubbles in the surface. A good contractor will reschedule if there's rain in the forecast. That's frustrating if you've taken a day off work, but it's better than a driveway that falls apart in a year.

The asphalt plant itself can cause delays. In the summer, every contractor in town is ordering loads at the same time. You might wait an extra hour for the truck to show up. That's normal. The crew will use that time to fine-tune the grade or compact the base one more time.

Once the asphalt is down, the rolling takes about an hour for a typical two-car driveway. The crew makes three or four passes with the roller. Each pass covers the whole width. They check the surface with a straightedge to make sure it's flat. Low spots get a little more mix shoveled on and rolled again.

After the roller is done, you can drive on it in a few hours. But the asphalt continues to harden and cure for several days. It reaches full strength after about a week. During that time, avoid heavy equipment like a camper or a boat trailer. And don't do any sharp turns.

Common questions about the Asphalt Paving process

Frequently Asked Questions