How to Fix a Sinking Driveway? (Las Vegas, NV)

How to Fix a Sinking Driveway in Las Vegas: Start With What’s Underneath

Fixing a sinking driveway in Las Vegas requires diagnosing whether the settlement comes from voids under stable soil (fixable with foam lifting) or from hydro-collapsible aeolian soils that compress when wet (requiring full removal and subgrade correction). Learn more about Paver Driveway Cost in Las Vegas, NV for different repair scenarios. The wrong diagnosis means the same section sinks again after the next monsoon. Call (855) 951-4361 for a free assessment that includes drainage slope evaluation and subbase probing before any repair method is quoted.

We see this mistake constantly in the Las Vegas valley. A homeowner notices their driveway slab has dropped two inches at the garage corner, calls a company offering Licensed Driveway & Pavers in Las Vegas, NV that pumps polyurethane foam or mud slurry underneath, and six months later the exact same spot is sinking again. The foam didn’t fail. The diagnosis did. In a desert city built on wind-deposited soils and caliche hardpan, the ground beneath your slab tells a specific story, and you need to read it before choosing the repair.

Todd Mervyn, our owner, grew up in Spring Valley pouring slabs with his uncle and has spent two-plus decades fixing what other contractors got wrong across the greater Las Vegas metro. His rule on every sinking driveway call: the ground doesn’t lie, and neither do we.

Why Las Vegas Driveways Sink Differently Than Elsewhere

Most national guides treat driveway settlement as a generic freeze-thaw or erosion problem. That advice doesn’t apply here. Las Vegas sits in the Mojave Desert on valley-fill soils that behave in ways that surprise contractors from wetter climates.

The valley floor is blanketed with aeolian soils, wind-blown sandy and silty deposits laid down over thousands of years. These soils are hydro-collapsible, meaning they remain stable when dry but compress suddenly and significantly when saturated. A single July monsoon cloudburst that ponds against your driveway can trigger settlement that would take decades of freeze-thaw cycles to produce in a Midwest climate.

Then there’s caliche, the calcium-carbonate cemented hardpan that forms inches below grade across much of the valley. Caliche is nearly impermeable. When water infiltrates through cracks or poorly sealed edges, it hits the caliche layer and travels horizontally, saturating the soil above it in localized zones. This explains the pattern we see constantly: one section of a driveway sinks while the adjacent section, poured the same day from the same truck, sits perfectly level.

Homes built during the 1999-2006 construction boom in Henderson and the east valley are particularly vulnerable. Original builders, working under extreme schedule pressure, often skipped proper subgrade compaction. Twenty years of thermal cycling and occasional moisture infiltration have now activated those original deficiencies. The slab was fine until it wasn’t, and now you’re looking at a trip hazard and drainage problem that won’t fix itself.

The Correct Repair Sequence: Diagnose First, Fix Second

At Groundwork Construction Co. of Las Vegas, our Driveway & Pavers services don’t quote a repair method until we’ve identified the failure mode. Our on-site assessment for sinking driveways includes three specific steps:

• Drainage slope evaluation: We measure how water moves across and around your driveway during rain events, identifying ponding zones and compromised seals
• Crack pattern analysis: The geometry of cracking tells us whether the slab is bending over a void, settling uniformly, or experiencing differential settlement from localized soil failure
• Subbase probe testing: We physically test the material beneath the slab to distinguish void spaces from compressible soil and to locate the caliche interface

Only after this written diagnosis do we recommend an intervention. Here’s how the repair methods break down based on what we find:

Notice the wide range on full replacement. That’s the caliche factor. Experienced Las Vegas contractors always budget for hardpan excavation; newcomers routinely underbid assuming normal desert soil, then discover they need a hydraulic rock saw or jackhammer to cut through the caliche, blowing schedules and margins. We’ve been called in after those jobs stall, and it’s never pretty for the homeowner left mid-project.

When Foam Lifting Works, and When It Wastes Your Money

Polyurethane foam lifting is an excellent technology when applied correctly. We use it regularly for Driveway & Pavers in Las Vegas projects where the diagnosis supports it. The foam expands to fill voids, provides structural support, and cures within minutes, allowing same-day use.

But foam lifting a slab sitting on hydro-collapsible soil is like putting a new roof on a house with a rotting frame. The slab goes back to level temporarily. The next significant rain event, the soil compresses again, and your level driveway is sinking once more, now with several hundred pounds of cured foam underneath that complicates future repairs.

We’ve repaired driveways in Summerlin, Henderson, and northwest Las Vegas where previous foam jobs failed exactly this way. The homeowner paid twice because the first contractor treated the symptom, not the cause. Our 730-Day Done Right Promise exists specifically because we believe you shouldn’t pay for our diagnostic mistakes, and we put that diagnosis in writing before quoting so you understand what’s actually happening under the slab.

What Homeowners Can Check Before Calling

You don’t need our equipment to gather useful information. Here’s what we ask homeowners to observe:

• Does the sinking occur after rain events, or gradually year-round? Seasonal correlation suggests hydro-collapsible soil.
• Is one section dropping while neighbors stay level? This pattern often indicates caliche-dam ponding.
• When was the home built? 1999-2006 construction in Henderson or the east valley raises our suspicion for original compaction shortcuts.
• Are there cracks radiating from the sunken area, or is the slab tilting as a single unit? Crack patterns reveal whether the subgrade is stable but voided, or actively compressing.

Take photos after your next rain event showing water flow patterns. That documentation helps enormously when we arrive for assessment.

One safety note: if your driveway has settled enough to create a significant step at the garage entrance or a tripping hazard at a public sidewalk, address it promptly. Liability exposure aside, the settlement is telling you something about water management around your home that affects your foundation over time.

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