Repair vs replacement cost breakdown
Concrete Repair Cost Calculator
Answer first: concrete crack repair costs $3–$8 per linear foot. Spalling repair: $5–$15/sq ft. Mudjacking a sunken slab: $3–$6/sq ft. Full replacement: $6–$12/sq ft. Use this calculator to estimate your repair scope and decide whether repair or replacement gives better long-term value.
Crack repair — $3–$8/lin ft
20 ft of hairline cracks: $60–$160 (epoxy or polyurethane)
Routing-and-sealing adds $4–$8/lin ft for wider cracks. Structural cracks need engineering review before sealing.
Mudjacking a 10x10 sunken slab
$300–$600 total ($3–$6/sq ft)
Polyurethane foam injection costs $5–$25/sq ft but is faster and lighter. Both methods need stable sub-base.
Spalling repair — driveway or patio
$5–$15/sq ft for patching; $3–$7/sq ft for resurfacing
Resurfacing covers up to 30% spalling economically. Beyond 30% surface damage, full replacement is usually more cost-effective.
Interactive workflow
Run the numbers, then save or export the project
How much does concrete crack repair cost?
Concrete crack repair costs $3–$8 per linear foot in 2026. Epoxy injection (structural cracks): $5–$10/lin ft. Polyurethane sealant (non-structural): $3–$5/lin ft. Routing and sealing: $4–$8/lin ft. A typical 20-ft driveway crack runs $60–$160 for basic sealing or $80–$200 routed and sealed.
How much does it cost to repair concrete spalling?
Concrete spalling repair costs $5–$15 per sq ft for patching in 2026. Resurfacing the entire slab costs $3–$7/sq ft. For a 400 sq ft driveway with 25% spalling (100 sq ft affected), patching runs $500–$1,500. If spalling covers more than 30% of the surface, full replacement at $6–$12/sq ft is usually more economical.
How much does mudjacking cost?
Mudjacking (slabjacking with cement slurry) costs $3–$6 per sq ft in 2026. A standard 10x10 sunken section runs $300–$600. Polyurethane foam injection costs more ($5–$25/sq ft) but is lighter, faster, and more precise. Mudjacking is only viable when the sub-base is stable — if the soil underneath continues settling, the slab will re-sink.
Should I repair or replace my concrete?
Repair when: cracks are under ¼ in wide, spalling covers less than 25% of the surface, the slab is level (or mudjacking is an option), and the concrete is under 20 years old. Replace when: cracks are structural or multiple, spalling covers 30%+ of the surface, the slab has heaved or settled more than 1 in, or repeated repairs have failed.
What is the cost to repair a concrete driveway?
Concrete driveway repair costs $500–$3,000 for a typical 2-car driveway in 2026. Minor crack sealing: $100–$300. Spalling repair for 20% of the surface: $600–$1,500. Full resurfacing: $1,000–$2,500. Full replacement: $3,600–$8,000. Get itemized bids that separate crack repair, patching, and resurfacing.
What repairs can I do myself vs hire a contractor?
DIY-appropriate: hairline crack sealing with self-leveling polyurethane caulk ($20–$40/tube), small spall patching with vinyl concrete patcher ($15–$30 for 10 lbs), and basic resurfacer application on flat areas. Hire a pro for: structural crack injection, mudjacking, overlay systems, or any repair affecting drainage or structural capacity.
How long do concrete repairs last?
Basic crack sealant lasts 3–7 years before reapplication. Epoxy injection lasts 10–20 years. Spalling patches last 5–15 years depending on product and prep. Mudjacking results last 5–10 years; polyurethane foam typically lasts longer. Surface resurfacers last 10–15 years with annual sealing. No repair lasts as long as properly installed original concrete.