How Long Before You Can Drive on New Concrete in Atlanta?
Atlanta Concrete Services tells every driveway customer the same thing: wait 7 days before parking a car on new concrete, and keep heavy trucks off for about 28 days. Foot traffic is usually fine after a day or two.
Those numbers assume normal Atlanta weather. In a cool stretch of late fall or winter, concrete gains strength more slowly, and we may ask you to wait a few extra days.
The wait feels long when your car is parked on the street. It is short compared to the decades a well-cured driveway should last.
Here is what is happening inside the slab during that week, and how to plan around it.
Why Choose Atlanta Concrete Services
Driving on New Concrete in Atlanta, GA
A Day-by-Day Timeline
Concrete does not dry like paint. It hardens through a chemical reaction between cement and water, called hydration, and that reaction keeps going for weeks. Here is how we schedule use of a new residential slab in mild weather.
- First 24 to 48 hours: keep off entirely except for careful walking once we say it is set
- Days 2 to 7: foot traffic, kids and pets are fine, but no cars, bikes with kickstands or furniture dragging
- Day 7: passenger cars and SUVs can park and drive on it, avoiding sharp turns in place
- Day 28: full design strength, so moving vans, delivery trucks, RVs and dumpsters can use it
On a concrete driveway, the edges are the weakest part because they have no slab beside them for support. Even after day 7, keep tires off the edges where you can for the first month.
Why 7 Days and 28 Days
The American Concrete Institute's curing guidance sets a minimum curing period of 7 days for ordinary cement, or until the concrete reaches 70 percent of its specified strength. By that point, a properly cured slab can carry a car without damage.
Engineers specify concrete strength at 28 days, which is why that number shows up on every job. The slab keeps getting stronger after that, but 28 days is when it reaches the strength it was designed for, and when we are comfortable with heavy loads.
How Atlanta Weather Changes the Wait
Temperature controls how fast concrete cures. ACI notes the reaction roughly doubles in speed for every 18 degrees Fahrenheit rise in concrete temperature, and that concrete kept at 50 degrees gains strength at about half the rate of concrete at 73.
Summer Pours
Atlanta's July highs average about 90 degrees, so summer slabs gain strength fast. The risk in summer is drying out too quickly, not curing too slowly. We pour early in the day, keep the surface moist or covered with a curing compound, and hold to the 7-day mark even though the slab looks hard sooner.
Fall and Winter Pours
January lows average in the mid 30s at Hartsfield-Jackson. We will not pour when temperatures are forecast to drop below 40 degrees, and in cool weather we cover fresh slabs with blankets. Expect us to stretch the no-car window to 10 days or more after a cold week, since a slab at 50 degrees is running at about half speed.
Spring and fall are the easiest seasons, with mild days that let concrete cure steadily. If your schedule is flexible, those months make the wait more predictable. We explain how curing ties into long-term cracking on our page about why concrete cracks in Atlanta.
The Apron, Trash Day and Other Atlanta Details
Most Atlanta driveways end at an apron in the city right-of-way. That piece is built under an ATLDOT permit and is the first spot a delivery truck or garbage truck will clip as it turns. We barricade the apron along with the rest of the drive and ask you to roll trash carts to a spot off the new concrete for the first week.
Plan big deliveries around the 28-day mark. Moving trucks, furniture deliveries, lumber drops and roll-off dumpsters are heavy enough to crack a young slab, especially a 4-inch residential one. If a project needs heavy equipment, we can pour a thicker section at the apron or build the driveway to handle it. For more on the city rules at the street, see driveway permits in Atlanta.
Patios, Walkways and Slabs
The same curing clock applies to other flatwork, with different loads. A concrete patio can take foot traffic in a day or two and patio furniture after about a week. Hot tubs and outdoor kitchens should wait for full strength.
A concrete slab for a shed or garage can usually take framing a few days after the pour, but vehicles and heavy shelving still wait the same 7 and 28 days. A walkway is ready for normal foot traffic within a couple of days.
Tips for the First Month
Do not use rock salt or deicers on new concrete during its first winter, since they can damage the surface. Avoid power washing until it reaches full strength, and keep downspouts pointed away from the new edges so the base stays dry while it settles in.
If you see a crack in the first week, let us know. Small shrinkage cracks along joints are normal. Anything bigger, we want to look at.
Schedule Your Pour
We set the pour date around the weather and your schedule, then give you a written plan for when you can walk, park and drive on it. Request your free estimate and we will help you time the job so the wait fits your week.