A driveway or patio planned for January or February
This question usually comes from someone eyeing a project in the coldest stretch of the year and wondering if it is even worth calling about, or whether it needs to wait for spring. It is worth calling about. Winter work is normal here, not an exception we make when someone insists.
What is true is that a winter project gets handled with more attention than a June one. The date, the mix, and how the slab is looked after in its first few days all get chosen around the specific week, not off a general winter checklist.
Why the season is not the deciding factor
We pour most of the year here and work around the forecast, not the calendar. A mild stretch in December can be a better pouring week than a cold, wet one in April. The decision on any given date comes down to what the temperature and the ground are actually doing that week, not what month it is.
What actually pauses a winter job
A hard freeze on the nights right around the pour, ground that has not thawed enough to work, or a stretch of cold that will not break for the concrete to gain any strength are the things that push a date. A single cold morning with a mild afternoon usually is not one of them.
When weather does push your date, we call you ahead of time rather than let it be a surprise on pour morning, and we get you back on the calendar as soon as the window opens back up.
What changes about the job itself in the cold months
The mix gets adjusted for the temperature it is going into, and the slab gets protected once it is down so it can keep curing through a cold night instead of losing ground to a freeze. Cure times run a little longer in the cold than the numbers you would hear about a summer pour, since the chemical reaction that builds strength slows down when it is cold out.
Anything poured outside in southwest Virginia gets an air entrained mix year round anyway, because the region goes through repeated freeze and thaw cycles every winter regardless of what week your particular pour lands on. Winter does not add that requirement, it just makes it obvious why it was already there.
The ground under the slab matters just as much as the air above it. We check that the subgrade is not frozen before any concrete goes on it, because frozen ground thaws later and leaves the slab resting on something softer than what it was placed on. That is a site condition we look at on the day, not something we assume from the calendar.
What tends to work well in winter, and what waits
A driveway, a patio, a garage slab, most flatwork moves through a winter schedule the same way it would any other time of year, just with more attention paid to the specific week. What tends to get pushed toward spring is a job that is already tight on time for other reasons, an approach that needs a lot of curing before it can be used, for instance, where a longer winter cure window would leave you waiting on it through the exact stretch you wanted it finished.
- Driveways, patios, and walkways: routine winter work
- Garage and foundation pours: routine, with the ground checked first
- A slab you need drivable fast: better suited to a milder week