Concrete driveways take a beating from UV rays, moisture, and temperature swings—so sealing matters more than most homeowners realize. If your contractor doesn't mention sealing as part of the job or aftercare, that's a red flag worth investigating. Understanding when, why, and how sealing fits into your driveway project helps you make smarter hiring decisions.
Why Sealing Isn't Optional
Unsealed concrete is porous. Water seeps in, freezes, expands, and cracks the surface. Salt, oil, and dirt burrow into the pores, causing stains and accelerating deterioration. A properly sealed driveway resists these threats and typically lasts 25–30 years instead of 10–15. Sealing isn't a luxury upgrade—it's maintenance that protects your investment.
Most professionals recommend sealing new concrete 28 days after pour, once it's fully cured. Existing driveways benefit from sealing every 2–3 years, depending on climate and foot traffic.
When Should Contractors Offer It?
For new installations, sealing should be part of the conversation. A quality concrete contractor will either:
- Include sealing in the base quote (typically $0.50–$1.50 per square foot)
- Offer it as an add-on with clear pricing
- Recommend a timeline and reputable sealer product
For repair or resurfacing jobs, sealing the affected area prevents water from re-entering cracks or compromised spots. This is especially critical if you've had existing driveway problems.
If a contractor doesn't mention sealing at all, ask directly. Their answer tells you whether they care about long-term durability or just completing the job.
Types of Sealers and What to Expect
Not all sealers are equal. Your contractor should explain the difference:
- Acrylic sealers: Budget-friendly ($0.50–$0.75/sq ft), water-based, easy reapplication. Last 1–2 years. Good for areas with minimal UV exposure.
- Polyurethane sealers: Mid-range ($0.75–$1.25/sq ft), solvent-based, stronger UV protection. Last 2–4 years.
- Epoxy sealers: Premium ($1.50–$3.00/sq ft), industrial-grade, highest durability. Last 5–10 years. Best for garages or high-traffic patios.
Ask your contractor which product they use and why. Reputable ones stock established brands (like Quikrete, Sakrete, or Curecrete), not generic no-names.
What the Process Looks Like
Sealing takes a day or two and follows a predictable sequence:
- Surface prep: Cleaning, degreasing, and drying (48–72 hours after rain or watering)
- Application: Typically two coats with a roller or sprayer
- Curing time: 24–48 hours before allowing foot traffic; 48–72 hours before vehicles
Your contractor should rope off the driveway and provide clear aftercare instructions. If they're sealing it within 28 days of a new pour, timing is critical—too early and the concrete isn't cured; too late and contaminants have already settled in.
Questions to Ask Before Hiring
- "Is sealing included or separate?" Know the cost upfront.
- "What sealer brand and type will you use, and why?" A specific answer shows expertise.
- "How often will I need to reseal, and what's involved?" Realistic maintenance expectations matter.
- "What's your curing time guarantee before I can park on it?" Protects both you and them.
- "Do you provide aftercare instructions in writing?" Documentation matters if problems arise later.
Finding Contractors Who Get It Right
When comparing bids, don't just look at base driveway price. A $2,000 pour that skips sealing ends up costing more in repairs than a $2,100 job that includes protection. Look for contractors who explain sealing unprompted and include it in their scope of work. Tools like Mercoly let you compare and find trusted concrete driveway contractors in your area, making it easier to spot which ones prioritize durability.
Frequently Asked Questions
Q: Can I seal my driveway myself instead of hiring the contractor? You can, and many homeowners do for budget reasons, but timing and surface prep are critical—improper application wastes money on a sealer that peels or fails prematurely.
Q: How much does driveway sealing cost for a typical two-car driveway? A standard two-car driveway (around 400–500 sq ft) typically costs $200–$750 to seal, depending on the sealer type and local labor rates.
Q: Will sealing prevent all cracks and stains? Sealing significantly reduces water and stain damage, but won't stop structural cracks from expanding or hairline cracks from forming under extreme freeze-thaw cycles.
Get quotes from contractors who value durability—compare multiple providers today to find the right fit for your project.