Should You Resurface or Replace Your Concrete Patio?
March 27, 2026
Resurfacing a concrete patio costs $3–15 per sq ft depending on finish. Full replacement runs $6–18. On a 300 sq ft patio, that's a savings of $900–3,000 if the slab qualifies. The catch: resurfacing only works when the existing slab is structurally sound. Here's how to assess yours and make the right call — the same decision framework applies to concrete driveways.
What Resurfacing Actually Is
Concrete resurfacing means applying a thin overlay (typically 1/4"–3/8") of a polymer-modified concrete mix over your existing slab. The overlay bonds to the existing surface and can be stamped, textured, or stained to look like new concrete.
When Resurfacing Works
Resurfacing is appropriate when: the existing slab is structurally sound (no major cracks, no heaving), the surface is just cosmetically worn, stained, or spalled, and the slab is level and properly draining. Cosmetic deterioration is what overlays fix — not structural problems.
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When to Replace Instead
Replace the slab if: there are cracks wider than 1/4" or cracks that are shifting (indicating soil movement), the slab has heaved or settled unevenly, water pools on the surface (drainage problem), or more than 25% of the surface is spalled or deteriorated. Overlaying a bad slab just delays the inevitable.
Cost Comparison: Resurface vs Replace
Resurfacing typically costs $3–7 per sq ft for a basic overlay, or $8–15 per sq ft for a decorative stamped overlay. Full replacement runs $6–18 per sq ft. On a 300 sq ft patio, resurfacing saves $900–3,000 over replacement — a meaningful difference if the slab qualifies.
DIY vs Contractor
Basic resurfacing products exist for DIY use, but the prep work (cleaning, etching, crack repair) determines whether the overlay bonds and lasts. Poorly prepped surfaces delaminate within a year. Decorative overlays with stamping or staining are almost always contractor work — the timing and technique require experience.
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