Can concrete be poured in winter in New Brunswick and how much extra does it cost?

Yes, concrete can be poured in winter in New Brunswick — but it requires cold weather concrete procedures that add 25-40% to the cost of a comparable summer pour, and it is only practical and cost-effective for urgent or commercial work. For most residential projects, waiting for the May-October window is the better choice.

Winter concrete in NB is genuinely complicated. The challenge is not just the cold air temperature — it is the cumulative effect of frozen substrate, cold aggregate, short daylength, and the extended period over which you must protect fresh concrete from freezing before it gains adequate strength. A summer driveway pour is essentially a one-day operation with minimal post-pour monitoring. A winter pour becomes a multi-day operation requiring active management.

The cost premium comes from several sources. Heated water and aggregate at the ready-mix plant add $20-$40 per cubic yard to the mix cost. Accelerating admixtures (calcium chloride or non-chloride accelerators) add $15-$30 per cubic yard. Insulating blankets must cover the entire slab immediately after finishing and stay in place for 7-14 days — blanket rental and labour to place and monitor them add $300-$800 for a typical residential driveway. For temperatures below -10°C, a heated enclosure (propane or electric) may be required, adding $500-$1,500 per pour. Thawing frozen substrate with a torpedo heater before placement adds time and fuel costs. When you total these expenses for a standard driveway pour, the premium is typically $1,500-$3,000 above summer pricing.

The work that does get done in NB winters is typically in two categories. Emergency foundation repairs where a homeowner faces structural failure and cannot wait for spring — a cracked or buckled foundation wall during winter needs attention regardless of season. Commercial construction with firm occupancy deadlines — a commercial building with a March occupancy date cannot wait for the frost to leave the ground. For these situations, experienced NB contractors have the equipment, materials, and knowledge to execute winter pours successfully.

For residential projects — driveways, patios, steps, and even planned foundation work — the honest advice is this: schedule your project for May or June. Book a contractor in February or March when their spring schedule is open, confirm your date in April, and you will get better concrete at a lower price with no cold weather risk. The 6-month wait feels frustrating when you are staring at a crumbling driveway in January, but a properly placed summer pour will outperform a rushed winter pour every time.

If you do need a winter pour in NB, get detailed quotes from at least three contractors who have actual cold weather concrete experience — not every concrete crew in Moncton or Fredericton does this work regularly. New Brunswick Concrete can help connect you with contractors experienced in winter concrete work.