Why flatwork sinks in Peoria
The house pad under your home was compacted and inspected. The soil under your driveway, patio and pool deck often got less attention. Over ten or twenty years, that looser fill settles, and water speeds it up. That’s why the classic Peoria call is a driveway that has dropped an inch or more at the garage, leaving a trip edge, or a pool deck that tilts back toward the house.
North Peoria is where we see it most. Communities like Vistancia and the foothill neighborhoods on the way to Lake Pleasant Regional Park were graded into slopes, with cut and fill pads under homes and yards. Flatwork poured over deeper fill settles first, especially where irrigation runs along the edge or roof runoff collects. Older parts of Peoria get the same problem from decades of lawn watering next to sidewalks and patios.
Polyjacking vs. mudjacking
There are two main ways to lift a slab from below.
Polyurethane foam (polyjacking)
Small holes, about the size of a coin, are drilled through the slab. A two-part polyurethane is injected, expands under the concrete, fills voids and lifts the slab. The foam is lightweight, so it doesn’t add much load to soft soil, and it cures fast enough that a driveway is usually usable the same day. Holes are patched afterward with cement grout.
Cement slurry (mudjacking)
Mudjacking pumps a cement-based slurry through larger holes. It’s heavier and slower to cure, but it can make sense on large areas. On the fill soils common in north Peoria, the added weight of slurry is one reason we usually prefer foam.
What we level
- Driveways and garage aprons, including the trip edge where the driveway meets the garage slab
- Patios and walkways that tilt toward the house or have separated at joints
- Pool decks that have settled after a leak or overflow softened the soil
- Garage floors with sunken sections near the door
- Steps and stoops that have pulled away from the house
When leveling isn’t the right fix
Foam leveling lifts flatwork and fills voids. It isn’t a substitute for piers when a house footing is still settling. If floors inside are sloping and doors are sticking, the problem is structural, and the fix is likely slab foundation repair with piers. Leveling also won’t last if the water that undermined the slab keeps running, so we look at irrigation lines, downspouts and grading at the same visit. Our drainage and soil stabilization work often goes hand in hand with leveling.
Pool decks and leaks
A pool deck that drops after years of being level is often a sign of a leak in the pool shell, plumbing or a splash-out problem, and lifting it without finding the water source just sets up the next drop. We recommend a leak check first when the pattern points that way. Our post on pool and irrigation leaks under Peoria foundations explains how to spot the signs before the concrete moves.
The concrete leveling process
Assess
We check how far the slab has dropped, look for voids, cracks and broken sections, and identify the water source. Badly broken concrete may need replacement instead of lifting.
Drill
Small holes are drilled in a planned pattern so the slab lifts evenly.
Inject and lift
Foam is injected in stages while the slab is monitored, so it rises gradually rather than all at once.
Patch and seal
Holes are patched, and joints or cracks are sealed so water can’t wash out the soil again.
How long a leveled slab stays level
A lifted slab stays put as long as the soil under it stays reasonably stable. That’s why we spend time on the boring parts: sealing the joint where the driveway meets the garage so roof water can’t run under it, moving sprinkler heads that spray the slab edge, and making sure downspouts discharge onto a splash block or extension rather than straight into the gap beside the concrete. Foam itself doesn’t break down in the soil, so when a leveled slab drops again, the cause is almost always water finding a new path or a deeper fill layer still consolidating. If that happens, the area can usually be re-injected without removing the earlier repair.
Concrete leveling near Peoria
Hillside lots in Anthem share north Peoria’s fill-pad profile, and settled driveways and pool decks are common there. In Surprise, many neighborhoods built from the late 1990s on are reaching the age when driveway and patio settlement shows up.
Permits and HOA rules
Peoria’s adopted building code, City Code ยง18-21, exempts driveways and sidewalks that sit no more than 30 inches above grade from building permits, so most flatwork leveling doesn’t need one. HOAs are a different matter. Some communities have rules about visible patches or work hours, so check with your association before scheduling.
Concrete leveling FAQs
Is polyjacking better than mudjacking?
For most residential jobs in Peoria, yes. Polyurethane foam is lightweight, uses small holes and cures quickly, so the slab is usually usable the same day. Mudjacking’s cement slurry is heavier and needs larger holes, though it can still make sense on large areas. On fill soils, foam’s lighter weight is a real advantage.
Why is my driveway sinking at the garage?
The soil under a driveway is often compacted less carefully than the house pad, so it settles first, especially where roof runoff or irrigation keeps it wet. That leaves a step down at the garage slab. It’s common in north Peoria communities like Vistancia, where driveways sit over graded fill, and it usually shows up ten to twenty years after construction.
Can a pool deck be leveled?
Usually yes, once the reason it sank is fixed. Pool decks often drop because a leak, overflow or poor drainage softened the soil underneath. After the water source is repaired, foam can lift the deck back into place and fill voids, and joints are resealed so water doesn’t wash the soil out again.
Do I need a permit to level my driveway in Peoria?
Generally not. Peoria’s adopted building code exempts driveways and sidewalks no more than 30 inches above grade from building permits, so standard driveway and patio leveling usually doesn’t need one. Your HOA may still have rules about work hours or appearance, so check with the association before work starts.
