Can I fix driveway cracks and potholes myself in Ottawa, or should I hire a contractor?

It depends on the size and nature of the damage. Some driveway repairs are perfectly suited to DIY, while others require professional equipment and materials that simply are not available to homeowners.

What You Can Realistically DIY

• Crack filling (cracks under 12 mm wide): Rubberized crack filler from a hardware store in Kanata or Barrhaven costs $15–$40 per tube or pourable jug. Clean the crack with a pressure washer or garden hose, let it dry, and fill it flush with the surface. The key is doing this before water gets into the base — once water freezes below the crack during an Ottawa winter, the crack expands rapidly.
• Small potholes (under 300 mm diameter, under 50 mm deep): Cold-patch asphalt is available at home improvement stores for $15–$30 per bag. Clean out loose debris, fill the hole slightly higher than the surrounding surface, and compact it with a hand tamper or by driving over it with your car tire. Cold patch is a temporary repair that typically lasts 1–2 Ottawa winters before needing reapplication.
• Surface seal coating: DIY driveway sealer costs $30–$60 per pail and covers roughly 40–50 square metres. It is a straightforward weekend project if you are comfortable working on your knees. Apply on a dry day above 10°C — in Ottawa, that means late May through September.

• Cracks wider than 12–15 mm: Wide cracks indicate base movement, and filling them without addressing the base just delays the inevitable. A contractor can assess whether the base needs work.
• Potholes larger than 300 mm or deeper than 75 mm: These need hot mix asphalt, which requires a commercial supplier and compaction equipment. Cold patch in a large pothole will fail within weeks under Ottawa traffic.
• Alligator cracking: The interconnected crack pattern means the base layer has failed. No amount of surface filling will fix this — the damaged area needs to be cut out and rebuilt from the base up.
• Frost heave or sinking sections: These are base and subgrade problems. Excavation, proper compaction, and professional paving are required.
• Edge reconstruction: Rebuilding crumbled edges requires sawcutting equipment, base preparation, and hot mix asphalt.

DIY crack filling and small pothole patching saves you $200–$500 compared to hiring a contractor for the same small repairs. But applying cold patch to a large problem area can actually cost you more in the long run — if the temporary repair fails and allows more water into the base over an Ottawa winter, you may end up needing full reconstruction instead of a professional patch that would have lasted years.

Safety Considerations

Hot rubberized crack filler (the professional-grade product) operates at temperatures above 190°C and can cause severe burns. If you choose to use a melter pot, wear proper protective equipment. For most homeowners, the cold-applied products are safer and more practical.

Timing Your DIY Repairs

Do crack filling and patching as early in the Ottawa season as possible — ideally late April or May when temperatures are consistently above 10°C. This seals the damage before summer rain penetrates further into the base. Seal coating should wait until later in the season when overnight temperatures stay above 10°C for the curing period.

If your damage is beyond DIY scope, use Ottawa Driveways to connect with local contractors who can handle the repair properly and save you from a costly redo next spring.

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Looking for experienced contractors? The Ottawa Construction Network connects Ottawa homeowners with qualified professionals:

• Justyn Rook Contracting
• JC Carpentry
• Home Front Services
• BFI Renovations
• ARTEXPRO Tile & Finishes