How much does it cost to seal a shared driveway between two semi-detached homes in Ottawa?

Sealing a shared driveway between two semi-detached homes in Ottawa typically costs $300 to $800 total when professionally applied, or $150 to $400 if you tackle it as a DIY project. The final cost depends on the driveway's total square footage, current condition, and whether crack filling is needed before sealing.

Most shared driveways between semi-detached homes in Ottawa range from 600 to 1,200 square feet — significantly larger than a typical single-home driveway. Professional sealcoating runs $0.40 to $0.80 per square foot in the Ottawa market, which includes surface cleaning, crack filling for cracks under 5mm, and two coats of asphalt emulsion sealer. If your shared driveway has extensive cracking requiring hot-pour crack filler, add another $150 to $400 for professional crack repair.

Ottawa's extreme freeze-thaw cycles make regular sealcoating essential for shared driveways. These larger surfaces experience more thermal expansion and contraction, plus they typically see heavier traffic from two households. The 50+ freeze-thaw cycles Ottawa experiences each winter penetrate unsealed asphalt, causing water damage, oxidation, and premature cracking. Sealcoating every 2 to 3 years extends your shared driveway's lifespan by 5 to 10 years — a critical investment given that replacing a shared driveway can cost $8,000 to $15,000.

Coordination between neighbours is crucial for shared driveway maintenance. Both homeowners benefit from sealing, so splitting the cost equally makes sense. Schedule the work for late spring through early fall when temperatures consistently stay above 15°C with no rain forecast for 24 hours. Many Ottawa contractors offer slight discounts for larger driveways since the setup time is the same whether sealing 400 or 1,000 square feet.

DIY sealcoating can work for capable homeowners but requires coordination and proper timing. You'll need a squeegee or roller, crack filler for any cracks wider than 5mm, and 8 to 15 buckets of asphalt emulsion sealer depending on your driveway size. Clean the surface thoroughly, fill cracks, then apply two thin coats rather than one thick coat. The key is working together — one person can't effectively seal a 1,000 square foot driveway before the sealer starts setting up.

Professional application is worth considering for shared driveways because contractors have commercial-grade squeegees, proper crack filling equipment, and experience managing larger surfaces. They'll also handle the logistics of blocking access for both households during the 24-hour curing period.

Need help finding a driveway contractor? Ottawa Driveways can match you with local professionals who specialize in residential sealcoating and maintenance.