Uneven concrete repair
Uneven concrete slabs are the most common concrete problem on the Colorado Front Range — and in most cases, they don't need to be torn out. Polyurethane foam lifting raises the low slab back flush in a single visit, no demolition, no haul-off, no weeks of waiting.
What you're seeing
The classic trip hazard — two slabs that were once flush have separated as one settles faster than the other. Polyjacking raises the low panel back flush without touching the one beside it.
A driveway or patio that drains properly when new starts collecting water as slabs tilt. The fix isn't resurfacing — it's re-leveling the underlying slope.
You can see daylight under the edge of a slab, or it rocks when walked on. That void is exactly what polyjacking fills.
Cracks at panel edges usually mean differential settlement — adjacent panels moving at different rates. Leveling the lower slab closes the gap and stabilizes both.
A slab that sounds hollow when tapped or flexes slightly underfoot has lost its soil support. Void-fill injection restores the base before the slab cracks through.
A driveway apron or patio slab that has dropped can pull garage door tracks out of plumb or shift gate posts. Lifting the slab often resolves the alignment issue without any carpentry.
Two factors make Colorado unusually hard on concrete. First, the Front Range sits on some of the most expansive bentonite clay in the country — clay that swells when wet, contracts when dry, and actively moves the soil under your slabs through every irrigation season and winter thaw. Second, many Front Range subdivisions — especially newer ones in Douglas and Arapahoe counties — were built on engineered fill that continues compacting for years after construction ends.
The result: slabs that were poured level stop being level faster here than almost anywhere else. Most homeowners assume replacement is the only option. In most cases, it isn't.
Every surface we level
Most can — as long as the slab is structurally intact. If the concrete itself is crumbling, severely fractured across the panel face, or heaved upward by tree roots rather than settled downward, replacement may be the right call. We assess every slab on-site before quoting.
Polyjacking typically runs 30–50% less than tearing out and repouring. Most residential jobs — a single driveway panel, a sidewalk section, a sunken patio — run from a few hundred to a few thousand dollars depending on size and the degree of settlement. We provide firm written quotes after a free on-site estimate.
Most residential jobs are done in a few hours. The foam cures to full load-bearing strength in about 15 minutes, so you can usually drive or walk on the repaired surface the same day.
If the underlying drainage problem is addressed, a properly lifted slab stays put for the life of the concrete. If the water pathway that caused the original settling isn't corrected, some re-settling is possible. That's why we assess drainage on every job and offer correction work when it's needed.