Is it cheaper to repair or replace an old deck in New Brunswick?

The decision between repairing or replacing your deck depends on the extent of damage and your deck's age, but in New Brunswick's harsh climate, replacement often makes more financial sense for decks over 15 years old or with structural issues.

For minor surface problems like loose boards, faded stain, or wobbly railings, repairs typically cost $500-$2,000 and can extend your deck's life by 5-10 years. However, if you're dealing with structural issues like rotted joists, failing footings, or a compromised ledger board, replacement usually becomes the smarter investment.

New Brunswick's freeze-thaw cycles are particularly brutal on aging decks. Once structural rot takes hold in our Maritime humidity, it spreads quickly through the framing. What starts as a $1,500 joist repair often reveals additional problems once contractors start opening things up — rotted beams, inadequate footings that don't reach our 1.2-1.5 metre frost depth, or ledger boards that were never properly flashed and have been slowly rotting your house wall.

Key factors that tip the scale toward replacement:

• Deck is 15+ years old with multiple failing components


• Structural damage (rotted posts, beams, or joists)


• Footings are too shallow for NB frost depth requirements


• Missing or failed ledger flashing (this damages your house too)


• More than 30% of decking boards need replacement


• Railings don't meet current building codes

When repair makes sense:

• Deck is under 10 years old with good bones


• Only surface boards or a few joists need attention


• Railings and structure are solid


• You're planning to replace within 5 years anyway

A typical deck replacement in NB runs $25-40 per square foot for pressure-treated lumber or $45-75 for composite. While that's a significant investment, you'll get 20-30 years of life with proper maintenance, plus the peace of mind that comes with modern materials, proper frost-depth footings, and code-compliant construction.

The hidden cost of repeated repairs often exceeds replacement when you factor in the ongoing maintenance headaches and the risk of structural failure. In our climate, it's usually better to bite the bullet and build once properly rather than throwing good money after bad on a deck that's fighting a losing battle against New Brunswick winters.

Need help finding a deck builder to assess your situation? New Brunswick Decks can match you with local contractors who understand our climate challenges and can give you an honest evaluation of repair versus replacement costs.