Guides / How Long Before You Can Drive on It
As a general rule, wait about seven days before you drive a car onto a new concrete driveway, and keep heavier loads like caravans and trucks off for longer, while light foot traffic is usually fine after about 24 hours. On the Downs the weather shifts those numbers: a winter frost slows strength gain and pushes the wait out, while a hot dry summer day pulls moisture from the slab fast, so curing has to be managed either way.
These are guidelines. Your concreter gives you a firm figure based on the mix that went in, the thickness of the slab and the weather on the days after the pour. When it doubt, wait the extra day.
Concrete does not dry, it cures, and curing is a chemical reaction that runs slower when it is cold. Toowoomba sits around 700 metres up on the Range and gets genuine winter frosts and sub-zero overnight temperatures, colder than most of lowland Queensland, so this matters here more than it does at lower elevations. A slab poured during a winter cold snap gains strength more slowly, which means the seven-day figure stretches out and you wait longer before driving on it.
There is a harder line as well: fresh concrete must not be allowed to freeze. If the water in a young slab freezes it damages the concrete, so pours are not put down into a frost, and a slab poured on a cold day may be covered or protected overnight to keep the frost off it. If you are having concrete done in the depths of a Toowoomba winter, expect the crew to watch the forecast and pick the day carefully, and expect a longer wait before you park on it. Our guide on the best time of year to pour goes into that in more detail.
The opposite problem shows up in the hot, dry summers on the Downs. On a hot day with a dry wind the surface of a slab can lose its moisture too quickly, and concrete that dries out rather than cures gains less strength and is more likely to craze or crack on the surface. It is not that you can drive on it any sooner, it is that the crew has to keep the moisture in it, by keeping it damp, covering it, or using a curing compound. If someone pours your slab on a scorcher and then walks away, that is a problem no matter how good the mix was. Curing is managed on the day whichever season you are in.
The waiting times only work if the slab was built and cured properly in the first place, and out here that means the right base for the reactive soil as well. If you are planning a new driveway or a slab, talk timing with your concreter up front so you know when you will get your access back. If you want to understand why the ground matters as much as the mix, our guide on why concrete cracks in Toowoomba covers it.
Want a pour scheduled around the weather so you get your driveway back on time? Call 0482 392 415 or send the job through the contact page and a local concreter will give you a fixed price and a realistic timeline for the season.
As a general rule, wait about 7 days before driving a car onto a new concrete driveway, and keep heavier vehicles like caravans and trucks off for longer. You can usually walk on it after about 24 hours. In a Toowoomba winter the cold slows strength gain, so a cold-snap pour sits at the longer end. Your concreter gives you a firm figure for the mix and the weather.
Usually around 24 hours for light foot traffic, once the surface has hardened. In cold winter weather it takes longer because the set slows right down. Stay off the very edges early, as they cure last and chip most easily.
Yes. Toowoomba sits around 700 metres up and gets real winter frosts, and cold weather slows the chemical reaction that gains strength, so a slab poured in a cold snap takes longer before you can drive on it. Fresh concrete must also be protected so it does not freeze, which would damage it. A pour is not put down into a frost.
On a hot, dry summer day on the Downs the slab can lose moisture too fast, and concrete that dries out instead of curing gains less strength and is more prone to surface cracking. That is why the crew keeps a new slab damp or covered in summer. The waiting times are similar, but the curing has to be managed.