Feet after four to eight hours, cars after 24 to 48, and gentle use for about a month. That is the short version. In the Triangle the heat speeds the first part up, the humidity and the shade slow it down, and an afternoon storm or a clay-covered pair of boots can undo it. Here is the longer version.
Sealer dries as the water in it leaves, so anything that helps evaporation shortens the wait and anything that slows it lengthens it.
That is why you get an exact window when your job is booked, rather than a number off a can.
Pop-up storms. Summer afternoons here often bring a thunderstorm out of a clear morning. Jobs are started early so the coat has hours of drying behind it before the usual build-up. If a storm hits a coat that has skinned over, it usually survives. If it hits a coat that is still wet, it can wash off, and that gets put right.
Sprinklers. Plenty of homes around the Triangle have irrigation on a timer. Turn off any zone that reaches the drive for at least 24 to 48 hours. A sprinkler at dawn on the first night is the most common way a fresh coat gets spotted.
Red clay. Clay on boots, tires and paws ends up pressed into a fresh coat, and a soft coat holds onto it. If the yard beside the drive is bare clay, or there is construction next door, keep foot traffic on the grass or a path for the first day, and rinse muddy tires before pulling on in the first week.
Sealer keeps curing for roughly a month after it is dry enough to drive on. In that time it is softer than it will be, especially on a hot afternoon, and a few habits leave marks:
Light scuffs from tires are normal on a new coat and fade as it cures. They are not a fault.
A commercial lot is usually sealed in sections so part of it stays open, and each section reopens after the same 24 to 48 hours. Lines go on once the sealer is dry, and the paint itself is ready for traffic quickly. For a church or daycare the work is timed to the days the lot is quiet.
On a long rural drive the job can be split into halves so the family keeps one way out, or timed so everyone parks at the road for a night. Either way you agree it before the day, not on it.
If the drive is new asphalt rather than a fresh coat of sealer, the rules are longer: stay off it with a vehicle for several days, and expect it to stay soft enough to mark on hot days for weeks. It also should not be sealed for six to twelve months. The paving page covers aftercare for new drives.
It rained the night after. Is it ruined? Usually not, if it had the afternoon to skin over. If you see milky patches or sealer in the gutter, call and it gets looked at.
Can I walk on it to get to the car? Once it is dry to the touch, yes. Before that, use the grass.
When can the lawn crew mow? The next day is fine, as long as the mower is not pushed across the drive while it is soft.
For timing the coat in the first place, see when to seal in North Carolina, and for the price, what it costs in Raleigh.
