How much does foundation repair cost in New Brunswick?

Foundation repair costs in New Brunswick range from $500 for a simple crack injection to $25,000 or more for major structural repairs or full exterior waterproofing on one wall. The price varies enormously based on the type of damage, the repair method, and how far the problem has progressed.

Crack injection is the most common foundation repair. A single crack injected with polyurethane or epoxy foam from the interior runs $500–$1,500 per crack, depending on length and severity. Polyurethane is better for active leaks because it expands and seals against water; epoxy is stronger and suits structural cracks in dry conditions. Most homeowners with a single leaking crack in a poured concrete wall in Saint John, Fredericton, or Moncton are looking at a $600–$1,200 repair.

Exterior waterproofing — digging down to the footing on the outside of the wall, applying a waterproofing membrane, installing new weeping tile and gravel drainage, then backfilling — is the most thorough and longest-lasting solution. It costs $5,000–$15,000 per wall depending on excavation depth, access, and whether the weeping tile system needs replacement throughout. This scope is significant but eliminates the source of hydrostatic pressure rather than just managing the symptoms.

Interior drainage systems (a perimeter drain channel, sump pit, and sump pump) cost $5,000–$15,000 for a full basement perimeter and are less invasive than exterior excavation. They do not stop water from entering the wall, but they intercept and redirect it before it reaches the basement floor.

NB-specific context: New Brunswick's spring thaw — typically late March through May — is when foundation leaks are most likely to appear or worsen. Snowmelt combined with still-frozen subsoil creates significant surface water with nowhere to drain except against foundation walls. River valley communities like Fredericton and Miramichi face especially high spring water table conditions. Addressing foundation drainage before the next winter is always more cost-effective than letting seasonal cycles worsen the damage year over year.

Foundation assessment and repair is never a DIY project. Get a professional assessment before committing to any repair method. New Brunswick Concrete can connect you with foundation repair professionals in your area at no charge.