When to Repair vs. Replace Your Concrete Driveway
A practical guide to deciding whether your driveway needs a repair or a full replacement, with photo examples from real Lakeway projects.
We get calls every week from homeowners who are not sure if their driveway needs a repair or a replacement. The answer is not always obvious, and the wrong call costs real money — either you pay for a repair that does not last, or you replace a slab that had another 10 years left in it.
After 18 years of looking at driveways in the Lakeway area, here is how we make the call.
The 4-question decision framework
1. Is the slab structurally sound?
This is the most important question. A slab that has failed structurally needs to be replaced, not repaired.
Signs the slab is structurally sound:
- Hairline cracks under 1/8 inch wide
- Surface spalling (the top layer is flaking) but no deep cracks
- Discoloration or staining, but no movement
- Joints that have failed (sealant is gone) but the slab edges are still aligned
- One or two cracks that run straight and have not moved in years
Signs the slab has failed structurally:
- Alligator cracking (interconnected cracks that look like a road map)
- Deep cracks (over 1/4 inch wide) that have vertical movement — one side is higher than the other
- Settling — a section of the slab has dropped below the rest
- The slab is “rocking” — when you drive over a section, it moves
- Chunks lifting at the control joints, often with rebar visible
- Water coming up through cracks after rain (indicates a broken sub-base)
If you see any of the second list, the slab needs to come out. A repair will not fix the underlying problem.
2. How old is the slab?
A 5-year-old slab with surface issues is almost always worth repairing. The concrete has decades of useful life left, and the surface problems are almost always from the original pour, not from age.
A 30-year-old slab with the same issues is a tougher call. If the structural questions above all check out, you can still get another 10 years out of it with a resurfacing overlay. But you are at the back end of the slab’s useful life, and a replacement is a real option.
A 50-year-old slab that is still in one piece is rare. If you have one, it was probably built better than most of what gets poured today. A resurfacing overlay is usually the right answer.
3. What is the cost difference?
A repair costs $5–$12 per square foot for surface work, or $8–$18 per linear foot for crack repair. A replacement costs $7–$12 per square foot for broom finish, or $14–$22 per square foot for stamped.
For a 600 sq ft driveway:
- Surface repair + resealing: $3,000–$7,200
- Crack repair only: $1,500–$4,000 (depending on linear feet)
- Resurfacing overlay: $3,600–$7,200
- Replacement (broom): $4,200–$7,200
- Replacement (stamped): $8,400–$13,200
If the repair cost is more than 50% of the replacement cost, replacement is usually the better answer. You get a brand new slab with a fresh warranty, and you do not have to think about the old slab for another 25+ years.
4. What is the cosmetic state of the rest of the property?
A driveway on a home that is otherwise in great shape is worth repairing. A driveway on a tear-down-rebuild or a major renovation is worth replacing. The same logic applies to a home you are about to sell — a new driveway is a strong selling point and the cost is recoverable in the sale price.
The most common scenarios we see
Scenario 1: Hairline cracks, slab under 15 years old
Answer: Repair.
Route and seal the cracks, pressure wash, reseal the surface if it is stamped. Total cost: $1,500–$3,500. The slab has 15+ years of useful life left.
Scenario 2: Surface spalling, slab under 20 years old
Answer: Resurface.
A polymer-modified overlay (1/4 to 3/8 inch) will give you a brand-new looking surface at 30–50% of replacement cost. Total cost: $3,600–$7,200 for a 600 sq ft driveway. The slab is structurally sound, it is just cosmetically tired.
Scenario 3: Alligator cracking, slab any age
Answer: Replace.
This is structural failure. The base has failed, the rebar is likely corroded, and any repair will be cosmetic at best. A resurfacing overlay will crack in the same pattern within 1–2 years.
Scenario 4: One deep crack, vertical movement, slab any age
Answer: Replace the affected section, or replace the whole driveway.
If the rest of the slab is in good shape, a partial replacement (cut out the failed section, re-pour to match) can work. If the crack is in the middle of the driveway, full replacement is usually the cleaner answer.
Scenario 5: Slab is fine but the color is wrong
Answer: Stain and seal.
A concrete stain (acid-based or water-based) can shift the color significantly. This works on broom finish, trowel finish, and stamped surfaces. Total cost: $3–$6 per square foot. It is a great option for a slab that is structurally perfect but the color no longer fits the home.
What a contractor should never do
A contractor who is selling you a repair should be willing to:
- Walk the slab with you and point out the specific issues
- Take photos of the problem areas
- Tell you on the spot if the slab is a candidate for repair or not
- Give you a written quote that specifies the work and the materials
- Warranty the work for at least 12 months
A contractor who quotes a repair without doing the above is probably going to do a bad job. The work that goes into a quality repair (surface prep, routing, sealing, mixing the right product for the conditions) is the same work that goes into a quality pour. If they are not doing the prep, they are not doing the work.
When in doubt
Send us a photo. We will give you a free, no-pressure assessment of whether the slab is a candidate for repair or whether it has reached the end of its useful life. We have done this enough times to know which one we would do if it were our own home.
Send photos and the approximate age of the slab and we will get back to you within a business day.