How do I tell when resurfacing makes more sense than repaving in Ottawa?

Resurfacing makes sense when the existing driveway's base is structurally sound and surface damage is limited to the top layer — repaving (full replacement) is the right call when the base has failed, drainage is compromised, or damage extends deeper than the surface course.

The distinction matters enormously in Ottawa because our climate is unforgiving of shortcuts. Overlaying new asphalt over a failing base is one of the most common and costly mistakes Ottawa homeowners make. The new surface will reflect every crack, heave, and soft spot from below within one or two winters, leaving you with a failed driveway and no good options except full tear-out anyway.

The Key Diagnostic Test: What Kind of Damage Are You Seeing?

The type and pattern of damage tells you almost everything about whether the base is still viable.

Surface-only damage — oxidation (fading to grey), minor surface cracking (hairline to 5mm wide), minor ravelling (loose aggregate at the surface), or isolated small cracks — suggests the base is intact and resurfacing is a legitimate option. This is typical of Ottawa driveways that are 10 to 20 years old, have been maintained with periodic sealcoating, and haven't experienced major drainage problems.

Base failure damage looks completely different. Watch for alligator cracking (interconnected cracks forming a pattern like reptile scales across large areas), depressions or rutting where the surface has sunk or shifted, heaving sections where frost has pushed the driveway upward unevenly, edge cracking and crumbling along the driveway perimeter, or water pooling that wasn't there when the driveway was new. Any of these signals that the granular base beneath the asphalt has failed, settled, or been compromised by frost heaving — and no overlay will fix that.

A simple field test: walk the driveway and press firmly on cracked areas with your foot. If the surface flexes, sponges, or moves under pressure, the base beneath is soft or compromised. A structurally sound base feels rigid underfoot even where the surface is cracked.

Ottawa-Specific Factors That Push Toward Full Replacement

Ottawa's frost depth of 1.2 to 1.5 metres and our clay-heavy soils in Barrhaven, Orleans, Gloucester, and Riverside South mean base failure is far more common here than in milder cities. Driveways built in the 1980s and 1990s — extremely common in Kanata, Nepean, and older Orleans — were often installed with only 150 to 200mm of granular base, well short of the 450mm minimum (300mm Granular B plus 150mm Granular A) that Ottawa conditions actually demand. These driveways have been fighting frost heave for decades, and by the time they show significant surface cracking, the base is usually compromised.

Age is also a strong indicator. If the driveway is over 20 years old and has never been resurfaced, the asphalt binder has likely oxidized through its full depth, not just the surface. Overlaying aged, brittle asphalt produces poor bonding between the old and new layers, leading to delamination — the new overlay peels away from the old surface within a few seasons.

Drainage changes are a definitive sign to replace rather than resurface. If water now pools where it didn't before, or if the driveway has developed a reverse slope toward the house, the base has settled unevenly. Resurfacing cannot correct grade — it follows the existing surface contour. Only a full tear-out and regrade fixes drainage problems properly.

Practical Cost Comparison

Resurfacing an average Ottawa driveway (40 to 60 square metres) runs roughly $2,500 to $5,500. Full replacement with proper base preparation runs $5,000 to $12,000. If resurfacing buys you 8 to 12 more years on a sound base, it's excellent value. If it fails in two winters because the base was compromised, you've spent $3,000 to $5,000 and still need full replacement — the worst possible outcome.

Get a contractor to probe the base before committing to an overlay. Any reputable paving contractor will core or probe the existing driveway to assess base depth and condition before recommending resurfacing. If they don't offer to do this, that's a red flag.

Ottawa Driveways can match you with local paving professionals who can assess your driveway and give you an honest recommendation — find contractors through the Ottawa Construction Network at justynrookcontracting.com.