Concrete Leveling and Slab Lifting in Greenwich, CT
Long driveways, courtyard walks and pool decks across Greenwich settle when hillside fill and frost-prone soil shift underneath. We level and lift concrete in Greenwich, CT, bringing sunken panels back to grade so you are not tearing out stone borders and mature plantings to start over.
Why concrete settles in Greenwich
Many properties here sit on glacial till and hillside cut-and-fill. When a long driveway was graded decades ago, soft pockets and poorly compacted fill were often left under the slab. Coastal Fairfield County also sees repeated freeze-thaw. Water that soaks under a panel expands as ice, then leaves a void when it thaws. Over a few winters the panel tips, a lip appears at a control joint and water starts ponding in a new low spot.
Pool decks and courtyard walks are especially exposed. Splash-out, irrigation and roof runoff all add moisture next to the slab edge. On estates with stone borders and formal plantings, tearing out a whole deck to pour new concrete is disruptive and expensive. Lifting preserves the surface when the concrete itself is still sound.
Where we lift most often
- Long residential drives that have dropped at mid-span or at the garage apron.
- Front walks and courtyard panels that rock or catch a heel.
- Pool deck sections tipping toward the water or the house.
- Side-yard service walks beside carriage houses and detached garages.
Foam lifting, done carefully
We map the low spots with a laser, drill small ports, inject structural polyurethane foam and raise the slab in controlled increments. The foam expands into voids and sets quickly. Holes are patched and the surface is left clean. Most residential lifts finish in a day, and the slab can usually take foot traffic within hours.
If the concrete is shattered, heavily scaled from winter salt or too thin to lift safely, we say so. Replacement or a combination of lift-plus-repair may be the better path. See our concrete repair page for crack stitching and resurfacing options, and concrete driveways when a full pour is warranted.
Drainage comes with the conversation
A lift that ignores water will not last. We look at downspouts, grade along the slab edge and any irrigation that soaks the base. Sometimes a short French drain or a re-aimed downspout is part of the scope. On steep lots off North Street, Round Hill and similar corridors, redirecting roof water away from the drive is often as important as the foam itself.
Timing around Greenwich seasons
Spring through fall is the preferred window. Midwinter work is possible on mild days when the slab is clear of ice, but frozen ground limits how far we can diagnose soft spots. If you are planning a spring landscape refresh, lifting first keeps new plantings and borders undisturbed.
Estates, courtyards and tight access
Greenwich jobs often mean long paved courts, gated entries and limited room for demolition trucks. Foam equipment fits where a full tear-out would tear up lawn panels and stone borders. We protect adjacent surfaces, keep dust down and leave the site broom-clean. If a panel sits against a historic stone step or a bluestone landing, we isolate the work so the lift does not bind those materials together.
On larger properties, we sometimes stage the work in sections so one side of a court stays usable. That matters when a household still needs daily vehicle access during the project window.
After the lift
Once the slab is level, we review any remaining cracks and recommend sealing where salt and water could still enter. If a courtyard needs a future overlay or a new patio pour elsewhere on the property, that can be planned without undoing the lift. Homeowners who also need a retaining edge repaired can look at our concrete retaining walls page for hillside options.
Concrete leveling questions
Will lifting disturb my stone border?
Usually not. We work through small ports in the slab and leave adjacent stone and plantings in place whenever the concrete is intact.
How much can a panel be raised?
Many residential drops of one to three inches lift cleanly. Larger voids need a closer look on site.
Do you work only in Greenwich?
We also serve nearby Fairfield County towns when scheduling allows.
Schedule a slab assessment
Call (475) 267-2083. We will measure settlement, check drainage and give you a written lifting price.