Hairline cracks, settled slabs, worn surfaces, failing sealant. We inspect first, identify what's actually causing the damage, and recommend the repair method that will hold — not the one that papers over the symptom.
Concrete cracks for several reasons — shrinkage as the slab cures, expansion and contraction through Arizona's temperature swings, soil movement under the pad, overloading from a vehicle the slab wasn't engineered for, or installation errors in the original pour. The first job on any crack repair is identifying which one of those caused the crack you're looking at, because the fix follows the cause.
Hairline shrinkage cracks under 1/8 inch take a wire-brushed clean and a flexible polyurethane or epoxy filler. Wider non-structural cracks get chiseled out slightly, vacuumed clean, and packed with patching compound or epoxy so the new material actually bonds. Structural cracks — anything that's widening over time, leaking water, or showing on a foundation wall — get epoxy injection or polyurethane foam, with surface ports sealed and the material injected under pressure.
Cosmetic match is part of the work. Once the crack is repaired, the surface can be ground flush, stained to blend, or resurfaced over so the finished slab reads as one piece.
When a section of slab has settled, heaved, spalled, or broken into pieces, the question is whether the rest of the pad is sound enough to repair around the failure — or whether the slab as a whole is at the end of its service life. We walk the site, check the subgrade, look at drainage, and tell you honestly which one you're dealing with.
Repairable damage includes localized spalling, surface scaling from de-icer or salt, small settled sections that can be mud-jacked back into level, and broken corners that can be re-poured and tied in. Replacement is the right call when cracks have widened past structural thresholds, when the subgrade has moved enough that a patch will fail inside a year, or when soil conditions need to be re-engineered before any new concrete goes down. See driveways and patios for full replacement options.
Resurfacing applies a thin layer of new concrete or polymer-modified overlay over an existing slab that's structurally sound but cosmetically worn. It's how a faded, stained, surface-cracked driveway or patio gets a fresh face without the cost of a full tear-out and pour.
The existing slab gets pressure-washed, repaired where needed, and primed. The overlay is troweled, broom-finished, stamped, or stained to the finish you want. Cure time is shorter than a full pour, the existing layout stays intact, and the finished surface reads as new concrete. Resurfacing only works when the slab underneath is still sound — we inspect first.
Sealing every two to three years is the single most effective thing a San Tan Valley homeowner can do to extend concrete life. A quality sealer keeps moisture out, blocks UV damage from the Arizona sun, and prevents chemicals and stains from soaking in. Penetrating sealers work well on driveways and walkways; acrylic sealers add sheen and color depth on stamped and decorative work.
Routine maintenance is straightforward — pressure-wash once or twice a year, fill small cracks promptly before water gets in and widens them, avoid harsh de-icers on the rare cold morning, and reseal on schedule. Catching the small stuff early is how you avoid the big stuff later.
Repair will hold when:
The slab is structurally sound. Cracks are hairline to moderate and not widening. Surface damage is cosmetic — spalling, scaling, fading, or surface-only cracking. Settlement is localized to one section and the subgrade around it is stable. Drainage is working.
Replacement is the right call when:
Cracks are widening visibly month over month. Multiple sections have settled or heaved. The subgrade has shifted — common in San Tan Valley's clay-and-sand mix when drainage wasn't engineered for the soil. Water is pooling on or under the slab. The slab is over twenty years old and the surface is delaminating across most of its area. In those cases, see driveway replacement or patio replacement.
The local soil is the hidden variable. Sandy ground drains fast but offers little support. Clay expands when wet and shrinks when dry, and concrete poured over poorly-prepared clay will move with it. Before we recommend a repair we walk the site, check the subgrade, and tell you which one you have.
The most common repair job we run in San Tan Valley starts the same way — surface cracks the homeowner has watched for a year or two, a settled section near a downspout, scaling from years of UV and the occasional harsh cleaner. The slab is still structurally sound. It just looks tired.
The fix is straightforward when the diagnosis is right. Cracks injected and sealed. Settled section mud-jacked back into level. Surface ground smooth, primed, and resurfaced with a polymer-modified overlay. Stained and sealed to finish. The pad reads as new, the drainage is fixed, and the slab has another twenty years on it.
See more in the gallery →Hairline cracks are thin surface cracks — typically under 1/8 inch — caused by shrinkage as the slab cured or minor seasonal movement. They're usually cosmetic and can be filled with polyurethane or epoxy. Structural cracks are wider than 1/4 inch, often widening over time, may leak water through, and sometimes appear with bowing walls, uneven floors, or visible movement at the edges. Structural cracks need professional assessment before any repair — papering over a structural problem with surface filler is how small problems become expensive ones.
It depends on what caused the original damage and how completely the repair addresses the root cause. A properly diagnosed and repaired hairline or moderate crack, sealed afterward, will typically last as long as the surrounding slab — fifteen to thirty years on residential work. Resurfacing applied over a sound slab lasts ten to fifteen years before the overlay itself needs attention. Repairs done without identifying the underlying cause — soil movement, drainage failure, undersized slab — tend to fail in one to three years, which is why the inspection comes first.
Yes, in most cases. Crack fillers come in standard concrete grays, and stains can be applied over the repair to blend it into the surrounding finish. For larger patches or resurfacing work, integral color or acid-etch stain can match a decorative or stamped pattern fairly closely — though perfect color match on weathered concrete is rare, because the existing slab has years of UV and wear that fresh material doesn't. We discuss expected match honestly before the work starts.
Four things, in roughly this order. Soil — the mix of sandy and clay-heavy ground in this area expands and contracts with moisture, putting stress on slabs above. Temperature — summer surface temps past 150°F and winter mornings near freezing drive expansion and contraction cycles. Drainage — poorly graded slabs let water pool or soak into the subgrade, accelerating soil movement. Installation — slabs that were poured without proper subgrade compaction, control joints, or reinforcement will crack regardless of climate.
Yes. Every repair job ships with a written, dated scope-of-work and a warranty on the repair itself. The warranty length depends on the type of repair — crack injection and resurfacing carry shorter terms than full slab replacement. We'll walk through the specifics in writing before any work starts so you know exactly what's covered and for how long.
For hairline cracks under 1/8 inch that aren't widening, a wire brush, a tube of quality polyurethane crack filler, and a steady hand will get you a reasonable repair. The catch is diagnosing whether the crack is actually hairline-only or the visible part of something larger underneath. If you're not sure — or if the crack is leaking water, widening, or paired with other signs like settling — call before you fill it, because a sealed crack is harder to diagnose later.
Snap a picture, text or email it over, and we'll tell you straight — repair will hold, or it's time for a full replacement. No drive-out fee for a quick assessment, no upsell on damage that doesn't need it.
If a repair won't hold, replacement is the right call. These are the most common surfaces we replace after a failed repair diagnosis.
Full driveway replacement when the slab is past repair. Engineered subgrade, proper control joints, and a finish that holds up to Arizona summers.
Standard, stamped, and decorative patio installations. Drainage planned around your landscape so the slab doesn't sit in standing water.
Replacement walkways and accessible paths. Code-compliant, ADA-friendly where required, and tied into existing hardscape.