Cracked pavement is a common sight in Ontario, where freeze-thaw cycles accelerate asphalt deterioration. When cracks appear, property managers face a question: fill them, or repave? The right answer depends on your pavement's condition, age, and the type of damage present. Here's how to assess it.
When Should You Crack Fill vs. Repave a Parking Lot?
Crack filling is appropriate when cracks are under 1 inch wide, the asphalt base is structurally sound, and less than 30% of the surface is damaged. When damage exceeds 30%, when alligator cracking is present, or when base failure is indicated by depressions and soft spots, repaving is the more cost-effective long-term solution. Crack filling costs $500–$2,000; full repaving runs $30,000–$150,000+.
When Crack Filling Is the Right Choice
Crack filling is appropriate — and highly cost-effective — when:
- •Cracks are narrow (typically under ¾ inch wide)
- •The underlying base is still structurally sound
- •Less than 25–30% of the total surface area is cracked
- •The asphalt is less than 15–20 years old
- •No significant base failure (depressions, sinking, alligator cracking) is present
Hot-pour rubberized crack sealant is flexible — it expands and contracts with temperature changes, maintaining a watertight seal through Ontario's harsh winters. Cost is typically $1–$3 per linear foot, a fraction of repaving costs.
When Repaving Is the Right Choice
Repaving (either full-depth replacement or mill-and-overlay) becomes necessary when:
- •The base has failed — you'll see depressions, sinking, or widespread alligator cracking
- •More than 30–40% of the surface is heavily deteriorated
- •The pavement is 20–25+ years old with significant wear
- •Potholes are widespread and recurring
- •Structural drainage problems exist beneath the surface
Crack filling a surface with failed base is a temporary fix — water will continue to compromise the subgrade and the cracks will return quickly. In these cases, repaving is the only lasting solution.
Decision Guide: Crack Fill vs. Repave
| Condition | Crack Fill | Repave |
|---|---|---|
| Crack width under ½ inch | ✅ Appropriate | Not needed |
| Crack width ½–1 inch | ✅ Appropriate | Not needed |
| Crack width over 1 inch | ❌ Not effective | ✅ Required |
| Less than 30% surface damage | ✅ Cost-effective | Not needed |
| 30–50% surface damage | ⚠️ Short-term only | ✅ Consider repave |
| Over 50% surface damage | ❌ Not effective | ✅ Required |
| Alligator cracking present | ❌ Not effective | ✅ Required |
| Base layer intact | ✅ Crack fill works | Optional |
| Base layer failed (soft spots) | ❌ Won't hold | ✅ Required |
| PCI score 55–100 | ✅ Maintenance appropriate | Not needed |
| PCI score 40–54 | ⚠️ Case by case | ✅ Evaluate |
| PCI score under 40 | ❌ Won't extend life | ✅ Required |
The Cost Comparison
| Action | Typical Cost (Ontario) | Extends Pavement Life |
|---|---|---|
| Crack filling (per visit) | $500–$2,000 | 3–5 years (if applied annually) |
| Sealcoating + crack fill | $2,000–$10,000 | 5–7 years per cycle |
| Partial repave (problem areas) | $5,000–$25,000 | Resets affected area |
| Full lot repave | $30,000–$150,000+ | 20–25 years |
A proactive maintenance program — crack filling cracks early, sealcoating every 2–3 years — can extend pavement life by 10–15 years and defer the much larger capital expense of repaving.
The Pavement Condition Index (PCI)
Pavement professionals use the Pavement Condition Index (PCI), a 0–100 scale, to assess pavement health. Crack filling makes sense for PCI scores of 55–80 (fair to good). Below 40 (poor), the economics of maintenance diminish and repaving is typically more cost-effective long-term.
Get an Honest Assessment
We provide honest recommendations. If your lot doesn't need repaving yet, we'll tell you — and we'll help you extend its life with the right maintenance program. If repaving is the only viable option, we'll explain why and refer you to a trusted asphalt contractor. Contact us for a free assessment.
