How long does an interior basement waterproofing warranty typically last in New Brunswick and what voids the coverage if the contractor leaves the province?

Most interior basement waterproofing warranties in New Brunswick run 10-25 years, but contractor relocation can create serious enforcement challenges that homeowners need to address upfront.

Interior waterproofing systems (drainage channels, sump pumps, and membrane installations) typically come with 10-15 year warranties from established local contractors, while some larger companies offer 20-25 year transferable warranties. The warranty usually covers system failure, pump malfunction, and water infiltration through the installed system — but excludes new foundation cracks, exterior drainage issues, or problems caused by poor maintenance.

When contractors leave New Brunswick, warranty enforcement becomes complicated. If the company maintains a registered business presence in NB or has bonding/insurance that covers warranty claims, you may still have recourse. However, many smaller contractors who relocate simply dissolve their NB business registration, making warranty claims nearly impossible to pursue. This is particularly problematic in NB's transient construction market, where contractors sometimes follow work to other provinces.

Protecting yourself requires due diligence before signing. Ask for proof of WorkSafeNB coverage, liability insurance, and bonding — bonded contractors have financial backing that can cover warranty claims even if they relocate. Request references from jobs completed 5+ years ago and verify the contractor's business registration status. For major waterproofing investments ($5,000+), consider contractors with established local roots — family businesses, long-term NB residents, or companies with permanent shop locations are less likely to disappear.

Common warranty voids include failing to maintain the sump pump, blocking drainage channels with storage, modifying the system without approval, or not addressing exterior water sources that overwhelm the interior system. In NB's climate, homeowners must also maintain proper basement humidity (30-50%) and ensure gutters and grading direct water away from the foundation.

Seasonal timing matters for warranty claims. Most water infiltration issues in NB occur during spring thaw (March-May) when hydrostatic pressure peaks. Document any problems immediately with photos and contact the contractor while the issue is active — waiting until summer when basements are dry makes diagnosis and warranty enforcement much harder.

For significant waterproofing projects, consider requiring the contractor to provide a performance bond or escrow arrangement that protects your warranty investment. While this adds cost, it ensures funds are available for warranty work regardless of the contractor's location.

Need help finding a bonded basement waterproofing contractor with strong local references? New Brunswick Basements can match you with established professionals who stand behind their work long-term.