Level Your Sunken Floors Without the Mess of Replacement
If your interior concrete floor is sinking or sloping, it doesn’t mean you have to demo your home. At RaiseRite, we use clean polyurethane foam to lift interior slabs from underneath — through small access points. Whether it’s your basement, laundry room, utility space, or a sunroom addition, we can restore your floor without removing tile, carpet, or walls.
Why Do Interior Concrete Floors Sink?
Most interior floors are poured on grade. That means they sit directly on soil — which can shift or settle over time. If the ground beneath your home wasn’t compacted properly or has been affected by water erosion or soil movement, the slab can sink. This leads to sloping floors, cracking tiles, sticking doors, and even interior gaps between walls and floors.
In addition to interior floors, we also level driveways, garage floors, walkways, steps, patios, porches, slabs, and pool decks. See all residential concrete leveling services for more.
Why Home Owners Trust RaiseRite
- 50+ Years of Experience (Est. 1974)
- 100,000+ Projects Completed
- 5-Year Warranty
- Family-Owned & Operated (3 Generations)
- Fast, Same-Day Results
- Renewable Foam (40% recycled content)
- Virtual Estimates Available – Just snap, upload, and get a quote
We’re not a franchise. We’re your neighbors. And we care about doing the job right.
What Are the Signs You Need Interior Floor Leveling?
Sunken interior slabs can affect your whole home. Watch for:
Cracked or sloping basement or laundry room floors
Gaps between baseboards and flooring
Doors or cabinets that stick or swing open
Tile or vinyl flooring pulling apart
Unlevel steps or transitions between rooms
Our Fix: Quick, Clean Concrete Leveling with Foam
Step 1) Injection holes are strategically drilled around the areas where the concrete is sunken and requires lifting.
Step 2) Once everything is prepped, and the hose and material are in place, the polyurethane foam is injected through the holes. It expands to fill the space underneath the concrete slab, using the slab itself to drive the foam into the crevices, thereby lifting the concrete back to its original position.
Step 3) Once the concrete is stabilized and lifted to the proper position, the injection holes are filled with new cement, allowing you to use your surface immediately.
Polyurethane concrete raising uses a foam material that is injected under the slab. When the components of the material are mixed, a reaction causes the material to expand. This expanded foam fill any voids beneath the slab and raises the concrete. This material will never lose density, is permanent and weighs only about 2 pounds per cubic foot.
Frequently Asked Questions
In many cases, no. If we can access the slab from adjacent utility areas, basements, or corners, we avoid disturbing finished flooring.
Yes — we specialize in leveling interior slabs with minimal disruption. We protect your space and leave it cleaner than we found it.
Yes — re-leveling the slab often fixes alignment issues caused by uneven flooring.
Absolutely. Our foam is non-toxic and safe for use inside residential homes. It cures quickly and has no harmful off-gassing.
We level floors in basements, sunrooms, laundry rooms, mudrooms, utility areas, and more — anywhere a slab has settled.
You can typically walk on or use the floor again within hours of completion.
Yes — interior residential leveling is covered by our 5-year warranty.
Still have questions? Check out our full FAQ page for more answers.
We Keep It Simple
Interior floor problems don’t have to mean renovation. With RaiseRite, we lift concrete slabs from below — quickly and cleanly — so you can get back to living comfortably without the cost or mess of replacement.
What Our Customers Have to Say
Why Choose RaiseRite
Serving Wisconsin since 1974
Over 50 years of experience lifting and leveling concrete across Wisconsin and beyond.
100,000+ Jobs Completed
We’ve helped more families and businesses fix their concrete than anyone else in the state.
$20M+ Saved vs. Replacement
Our concrete lifting service has saved customers millions by avoiding tear-outs and full replacements.
5-Year Warranty
We stand behind every concrete leveling job with a real warranty — no fine print, just peace of mind.
Family-Owned & Operated
Three generations working together to deliver honest work and long-lasting results.
We Train the Industry
Contractors across the country come to us to learn — when you hire RaiseRite, you get the team that sets the standard.
We Manufacture the Tools
We build the same polyurethane foam and equipment used by top pros across the industry.
Residential, Commercial & Municipal Work
From homes to highways, we handle projects of all sizes — safely and professionally.
Proudly Based in Wisconsin
We’re a local team using American-made tools and doing the job right, every time.
