My newly poured driveway in Bathurst is already cracking after one winter — did the contractor use the wrong mix?

Concrete cracking after just one winter in Bathurst is definitely not normal and suggests either a mix design issue, poor installation practices, or both. Given New Brunswick's harsh freeze-thaw cycles and Bathurst's coastal climate, your driveway should have been designed to handle these conditions for decades, not fail in the first year.

The most likely culprits are inadequate air entrainment (should be 5-8% for freeze-thaw resistance), wrong water-cement ratio (too much water weakens concrete), or insufficient curing time during cold weather. Bathurst's coastal location means contractors also need to account for salt exposure from winter road treatments, which requires proper concrete density and potentially additional protective measures.

Installation factors that commonly cause early cracking include pouring concrete when temperatures were below 5°C, inadequate subgrade preparation on Bathurst's clay soils, missing or improperly spaced control joints (should be every 8-10 feet), and insufficient thickness for the intended load. Many driveways also fail because contractors skip proper vapor barriers or don't compact the gravel base adequately.

Your contractor should have used a minimum 3,000 PSI concrete mix with proper air entrainment for New Brunswick's climate. The concrete should have been at least 4 inches thick for regular vehicles, with control joints cut within 24 hours of pouring. Given Bathurst's freeze-thaw cycles, proper curing (keeping concrete moist and above 10°C for at least 7 days) was critical.

Document the cracking immediately with photos showing the extent and pattern. Contact the contractor first to discuss warranty coverage — most reputable contractors guarantee their concrete work for at least one year. If they're unresponsive or refuse responsibility, you have options under New Brunswick's Consumer Product Warranty and Liability Act, which provides implied warranties on construction materials and workmanship.

For technical disputes, contact the City of Bathurst's building inspection department to verify if proper permits were obtained and if the work meets code requirements. If the contractor is uncooperative, consider filing a complaint with WorkSafeNB (if they were supposed to be covered) and potentially pursuing the matter through Small Claims Court for damages up to $20,000.

Get a second opinion from another concrete contractor in the Bathurst area who can assess whether this is a material failure, installation problem, or both. This documentation will be valuable whether you're seeking warranty coverage or considering legal action.