Concrete Repair
Specialists
in San Diego

Repair when: the sub-base is stable, cracking is hairline or localized, the slab is generally level, and the decorative finish is largely intact. Replace when: the sub-base has failed (soft or saturated soil under the slab), cracking is progressive or structural, there's significant differential settlement, or more than ~20% of the slab is damaged. Repair typically costs 25–40% of replacement. Modern Yardz gives you an honest assessment on-site before quoting either option.

Costs vary widely by repair type. Simple crack repair by epoxy injection: $8–$15 per linear foot. Slabjacking to level a sunken slab: $4–$8 per square foot. Polymer overlay resurfacing: $6–$12 per square foot. Spalling repair with micro-topping: $4–$9 per square foot. Color and seal refresh: $1.50–$3 per square foot. Full decorative stamp overlay: $10–$14 per square foot. Modern Yardz provides a detailed quote after the free on-site assessment.

A properly executed repair typically lasts as long as the original slab when the underlying cause is addressed. Epoxy-injected structural cracks are permanent repairs — the epoxy is actually stronger than the surrounding concrete. Slabjacking lifts the slab back to grade permanently, though the soil issue causing the original settlement may need separate attention (drainage, tree-root removal, sub-base stabilization). Polymer overlays last 10–15+ years with normal use. Color-and-seal refreshes need repeating on the 2–3 year reseal cadence.

Slabjacking (also called polyjacking) uses expanding polyurethane foam injected through small pencil-sized holes under the sunken slab. The foam expands, lifts the slab back to grade, and cures in 15–30 minutes — same-day use. Traditional mudjacking uses a cement-and-soil slurry; it works but the slurry is heavy (can re-settle), cure takes days, and entry holes are larger. Modern polyurethane slabjacking is the modern preferred method for residential driveways, patios, and pool decks in almost every case.

For most cracks, yes. Hairline shrinkage cracks stabilize with a flexible polyurethane crack filler that moves with the slab without reopening. Structural cracks are permanently repaired with low-pressure epoxy injection — the epoxy bonds the two sides of the slab together, the crack becomes stronger than the surrounding concrete, and the repair is permanent. A crack that keeps reopening after repair usually indicates an active soil or structural issue that needs separate attention (drainage, root intrusion, sub-base settlement).

In San Diego, the most common causes are: (1) expansive clay soil that swells and contracts with seasonal moisture, (2) tree root intrusion from the many mature trees across the county, (3) poorly compacted sub-base from the original install, (4) inadequate or missing control joints, (5) coastal salt spray accelerating sealer and surface failure, and (6) pool chemistry splashing onto adjacent decks. We diagnose the root cause so the repair lasts — fixing the crack without fixing the cause just delays the next crack.

Yes, when the existing slab is structurally sound. Polymer-modified concrete overlays bond to prepared existing concrete at 3/8" to 1/2" thickness and can be finished with any decorative technique: stamped patterns, acid stains, dyes, broadcast aggregate, or polished finishes. Overlays save the demolition and disposal cost (typically 30–40% of a tear-out) and avoid the full 7-day cure window — overlays are typically walkable in 24 hrs and fully serviceable in 3–5 days.

Yes — pool deck concrete is one of our most common repairs because pool chemistry (chlorine, salt, sunscreen) accelerates surface spalling and sealer failure. Common pool deck repairs: surface resurfacing with cool-deck or Sundek products (resists heat and adds slip resistance), spalling repair with micro-topping, crack stabilization in deck-to-coping transitions, and color-and-seal refresh. We coordinate timing with your pool season and can usually complete pool deck repairs in 2–4 days with limited pool downtime.

For very small cosmetic issues (hairline cracks under 1/16", minor surface chips), DIY products from a home center can get you a serviceable result. For anything structural, anything involving settlement, or anything on a decorative surface where appearance matters, professional repair is almost always worth it. DIY repairs on stamped or decorative concrete almost always end up more visible than the original issue. Modern Yardz often gets called in to fix well-intentioned DIY repairs that didn't go as planned.

Modern Yardz backs all repair work with an in-house workmanship warranty, duration varying by repair type: 5 years on structural epoxy crack repair, 10 years on polymer overlay resurfacing, 5 years on slabjacking (assuming no new soil event), and product-specific warranties on proprietary systems like Sundek cool deck and Ardex self-leveling overlays. The specific warranty is stated in your repair quote so you know exactly what's covered before work begins.