Driveway Repair & Resurfacing in Toronto: Fix Cracks and Spalling for 2026

Hairline cracks (under 3mm wide) (Low)

Surface-level cracks caused by normal thermal cycling. The concrete is structurally sound. These can be sealed with a polyurethane crack filler and protected with a sealer coat. If ignored, they widen every winter until they become medium cracks.

Medium cracks (3–10mm wide) (Moderate)

Water has been entering and freeze-thaw cycling has widened the crack. The edges may show minor spalling. These require crack routing, backer rod installation in deeper cracks, and flexible polyurethane injection before any resurfacing overlay is applied.

Spalling (surface pitting and flaking) (Moderate–High)

Road salt and repeated freeze-thaw action breaks the surface layer off in flakes or patches. The underlying concrete is often still structurally sound. Spalling can be addressed with a micro-topping or concrete resurfacer if the slab is stable, or a full epoxy/polyaspartic overlay system.

Heaving or sinking sections (High)

Tree roots, soil erosion, or frost heave has displaced sections of the slab. Coating or resurfacing over a heaved section is a temporary fix — the underlying cause must be addressed first, which may involve mudjacking (slab lifting), root removal, or partial slab replacement.

Wide structural cracks or full slab movement (Replacement needed)

When cracks run through the full depth of the slab, multiple sections are displaced, or drainage is pooling toward the foundation, resurfacing is not a viable long-term solution. A full removal and repour is the correct answer, and we'll tell you honestly when that's the case.

On-Site Assessment

We walk the driveway, probe cracks for depth, check for slab movement, test for hollow spots, and assess drainage. We determine whether the slab is a resurfacing candidate or needs structural work first. You get a written scope before anything starts.

Crack Repair & Spall Patching

Cracks are routed, cleaned with compressed air, and filled with flexible polyurethane. Spalled areas are ground back to solid concrete and filled with a polymer-modified concrete repair mortar matched to the surrounding surface.

Surface Preparation

The entire driveway surface is diamond-ground to remove laitance, old sealer, and any remaining delaminated material. This creates the concrete surface profile (CSP) required for the resurfacing system to bond properly. Skipping this step is why DIY coatings peel.

Primer & Base Coat

A penetrating primer is applied to seal the prepared surface and promote adhesion. On driveways with any moisture concern, a moisture-tolerant primer is used. The base coat is applied at the specified coverage rate and allowed to reach the correct tack before the next step.

Resurfacing System & Topcoat

The selected resurfacing system (polyaspartic flake, epoxy overlay, micro-topping) is applied and finished. A UV-stable clear topcoat with a matte or satin sheen seals the surface. This topcoat is what provides chemical and salt resistance and protects the underlying colour or texture.

How long does driveway resurfacing last in Toronto?

A properly installed polyaspartic resurfacing system on a sound slab lasts 15–20 years before major recoating is needed. A micro-topping overlay with an annual sealer refresh lasts 8–12 years. The single biggest factor is the quality of the surface preparation — inadequately ground surfaces delaminate within 1–3 years regardless of the product applied.

Can you resurface a driveway in winter in Toronto?

Most coating systems require substrate temperatures above 5–7°C for proper adhesion and curing. Polyaspartic has a wider temperature tolerance than standard epoxy but still requires above-freezing conditions. We typically schedule exterior concrete work from late April through mid-October. Emergency crack sealing can be done year-round with flexible polyurethane fillers designed for low-temperature application.

Does road salt damage a resurfaced driveway?

Calcium chloride de-icing salt is highly aggressive to unsealed or inadequately sealed concrete and to acrylic topcoats. A UV-stable polyaspartic or polyurethane topcoat provides significantly better salt resistance than acrylic sealers. We recommend using sand for traction on freshly coated surfaces during the first winter and switching to a sodium chloride-based product rather than calcium chloride if de-icing is needed.

What's the downtime after driveway resurfacing?

With a polyaspartic system, foot traffic is safe within 4–6 hours. Vehicle traffic should wait 24 hours for passenger cars and 72 hours for heavy vehicles like delivery trucks. Micro-topping systems require 24 hours for foot traffic and 7 days for vehicles. We'll give you a specific return-to-service schedule based on the system installed and the weather forecast.

Can you repair just part of a driveway?

Yes — spot crack repairs and spall patches can absolutely be done to isolated areas. For resurfacing, partial-driveway applications are possible but require a clear termination edge (expansion joint, saw-cut line) to avoid a visible colour or texture transition. We'll advise on whether a partial or full resurface makes more visual and practical sense for your specific situation.

Is a concrete driveway better than asphalt for Toronto winters?

Concrete driveways outlast asphalt driveways significantly in the Toronto climate — 30+ years versus 15–20 for asphalt — but cost more upfront and require sealing to prevent salt damage. Asphalt is easier to patch and repair and handles freeze-thaw movement better due to its flexibility, but it requires resealing every 2–3 years to prevent cracking and oxidation. Both are viable choices; the decision usually comes down to budget, aesthetics, and how long you plan to own the home.