Is it worth repairing a 20-year-old asphalt driveway in Ottawa or should I just replace the whole thing?

A 20-year-old asphalt driveway in Ottawa is approaching the end of its typical lifespan, and replacement is usually the better long-term investment unless the damage is very minor and the base remains stable.

At 20 years in Ottawa's brutal climate, your driveway has endured approximately 1,000 freeze-thaw cycles, two decades of snowplow scraping, and countless applications of road salt. Most asphalt driveways built in the early 2000s are showing significant wear by now, and the question becomes whether the underlying base structure is still sound or if surface repairs are just cosmetic fixes over deeper problems.

Repair makes sense if your driveway has only minor surface cracking (hairline cracks less than 5mm wide), isolated small potholes, and the surface is still relatively level without major settling or heaving. In this case, professional crack filling with hot-pour sealant ($2-5 per linear foot), pothole patching with hot-mix asphalt ($100-400 per hole), and a fresh sealcoat application ($200-500 for an average driveway) can extend the life by 3-5 years for a total investment of $800-2,000. This approach works best if you've maintained the driveway with regular sealcoating every 2-3 years throughout its life.

Replacement is the better choice if you're seeing alligator cracking (interconnected cracks forming a reptile-skin pattern), significant edge cracking, multiple large potholes, areas where the asphalt has completely failed down to the base, or any settling and heaving that creates drainage problems. These are signs that Ottawa's freeze-thaw cycles have compromised the structural integrity of both the asphalt surface and potentially the granular base beneath. Repairs on a driveway with these issues typically fail within 1-2 winters, leaving you with repair costs plus full replacement costs.

Ottawa-specific considerations make replacement more attractive at the 20-year mark. Driveways built in the early 2000s often have thinner asphalt lifts and less robust base preparation than current best practices. Modern Ottawa driveway construction uses deeper granular base layers (minimum 300mm Granular B plus 150mm Granular A) to handle our 1.2-1.5 metre frost depth, and two-lift asphalt installation (50mm binder course plus 50mm surface course) for better durability. Your 20-year-old driveway likely has a single 75mm asphalt lift over minimal base depth.

Cost comparison for an average Ottawa driveway: Major repairs (crack filling, multiple pothole patches, sealcoating) will run $1,500-3,000 but only buy you 3-5 more years. Full replacement costs $5,000-12,000 but gives you 20-25 years of service with proper maintenance. The math strongly favors replacement unless you're planning to sell the house within 2-3 years.

When to hire a professional: Have a qualified paving contractor assess the base condition before deciding. They can probe the base depth, check for stability, and identify whether the granular foundation is still sound. If the base has failed, surface repairs are pointless. If the base is solid, targeted repairs might be worthwhile as a short-term solution.

Need help finding a driveway contractor for an assessment? Ottawa Driveways can match you with local paving professionals who can evaluate your specific situation and provide honest guidance on repair versus replacement.