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What issue are you experiencing?

Cracks, water intrusion, crawl space moisture, settlement, etc.

Sagging Floors Repair, Waukegan, IL

We Treat Your Home Like Our Own


4.8/5 Rating with 2,000+ Reviews
Acculevel, Inc. BBB Business Review

We can fix even the most stubborn sagging floors.

Your floor is supposed to be a smooth, even surface that is firm and steady beneath your feet. It is not supposed to have ridges like a potato chip. It should not offer a kid-friendly ski slope to one side, nor give way to you like memory foam insoles. And there is definitely not supposed to be a visible gap smiling at you between the baseboard trim and your flooring. You know these are signs of uneven floors, but do you know what causes them? Don’t worry, we can fix all of those issues.

Our company specializes in sagging floor repair in Waukegan, IL. Our sagging floor experts can fix just about any issue regarding sagging or bowed floors. Contact us today to get your free estimate and what it will take to fix your sagging floors.

What causes floors to sag? A sagging floor is a sign that the “bones” of your home are diseased or damaged. In our experience, the earlier these issues are detected and addressed, the less expensive the repairs are. At Acculevel, we’ve been repairing sagging floors, warped floors, bowed floors and structural wood flooring systems since 1996.
sagging floor

What Causes A Slab Floor To Sag?

Unlike homes with basements or crawl spaces, a slab floor is solid concrete with no structural wood flooring system.  For homes with this type of floor, soft soil or bad compaction is almost always the culprit.   Once the soil is compromised, the slab will shift, and this creates the sagging or sinking effect. Pressure from that shift will sometimes crack the slab itself, causing high and low places in the flooring. To fix this type of damage, you need concrete slab repairs.

What Causes A Floor To Sag If You Have A Basements Or Crawl Space?

For basements & crawl spaces, the suspect pool is considerably larger. The support structure is mostly wooden, which makes it susceptible to a variety of issues.

Water

Water is a probable suspect, as it seeps into the ground around your foundation.  The sill plate, wood beams, and floor joists are all vulnerable to this; these wooden components on top of your foundation are the wood framing system that supports your floor.   Because it has direct contact with the concrete and can be over the exposed soil line, it often falls victim to water intrusion.  Once water intrudes and saturates the wood, this leads to deterioration. It’s this deterioration that causes the floor system to fail.

badly decayed joist splintering across support beam
This picture was taken by an Acculevel Project Manager on a routine free estimate appointment.

Humidity

But you don’t have to have standing water under your house to cause structural decay.  High humidity can also damage the beams and joists that hold up your subfloor. Wood is highly porous and readily absorbs water from the air.  Over time, this water saturation softens and rots the boards. As they decay, they compress under the weight of your home, lowering your floor sometimes by several inches.

Insects

Insects are another frequent perpetrator; termites are a well-known home invader.  But there are also several subspecies of beetles that eat wood. Powderpost beetles are common and difficult to recognize.  They’re very small- the average adult beetle is smaller than a grain of white rice.  These tiny menaces lay their eggs inside wooden beams, and when they hatch, the larvae eat the wood.   Both beetles and termites will infest your structural wooden flooring system and gnaw damage as they go.

Human Error

Human error is another possibility, particularly if your home has been retrofitted with updated plumbing, electrical, or HVAC products.  Making room for these types of installations can be difficult, and sometimes a contractor will cut or notch some of the joists- or even the main support beam- to make room for new pipes or venting.  These cause weak spots in the flooring structure that will eventually crack or split.
wooden shim has compressed, lowering joist
This picture was taken by an Acculevel Project Manager on a routine free estimate appointment.

Age of Your Home

Lack of building codes- or outdated ones- are another concern.  A main support beam, the post that spans the length of your home, should be sized proportionately and supported every few feet.  In many homes, the beams may not be the correct size or the support posts are installed too far apart. This over-spanning puts greater stress on the beam and makes it more likely to sag and potentially even fail. 

Along the same lines, if your home is more than 50 years old, it’s also possible that inadequate materials are to blame.  When a home is built, sometimes the beams or joists are not the correct dimensions. When this happens, a contractor will install a shim; a shim is a thin piece that adds a minimal lift to ‘even out’ the installation.   Many times in construction, that shim was usually another piece of wood; at Acculevel we use steel shims to prevent compression or rot.  These shims also allow us to increase the overall surface of the bearing load, so that the beam it’s supporting is not crushed by the weight of your home.

Technology

Technology is another age-related factor.  New solutions and materials are always in development, but they take time to become commonplace.  Before the 1970s, pretreated or pressure-treated lumber was not widely available or regularly used by builders.  Lumber installed in its original ‘raw’ form is more vulnerable to insects and water damage. 

New trends in home design can have a negative effect if a remodel doesn’t take the weight of the raw materials into account.  Many older homes aren’t built to carry the load of solid granite countertops or stone-tiled floors and walls. Recreational items like a pool table or hot tub will also add significant weight to your floor system.   These are all items that can put additional stress onto an already failing wood structure.

Take Action

Contact Acculevel! We provide free estimates on sagging floor repairs.

Sagging Floors Repair FAQs

What causes sagging or bouncy floors?

Undersized or failing supports, wood rot from moisture, or settling piers can allow floors to dip and squeak.

How do you fix it?

We add or replace supports, install adjustable steel jacks, and address moisture sources that lead to deterioration.

Will this stop squeaks and uneven spots?

Stabilizing the structure usually resolves squeaks and reduces dips. Your project manager will explain what to expect.

How long does it take?

Most projects complete in 1–3 days, depending on access and scope.
Common signs include cracks in walls or floors, sticking doors or windows, and uneven floors. If you notice these issues, schedule a free inspection to identify the cause and recommended solution.
Most projects can be completed in a few days. The exact timeline depends on the severity of the issue and the type of repair. Our team will give you a clear timeline during your consultation.
Yes. We partner with leading financing providers so you can repair your home now and pay over time. Ask about our flexible payment plans during your free inspection.
We minimize disruption whenever possible. Many repairs are completed from the exterior, and our crews respect your property, leaving it clean once the job is finished.

Are repairs warrantied?

Yes—structural solutions include strong warranty options; details come with your proposal.

Our Completed Projects in Waukegan, IL

Take a look through our recently completed projects to see real foundation repair and basement waterproofing work. Each project shows how Acculevel approaches planning, installation, and respect for your home.

Our team completed a waterproofing project for Kimi in zip code 60051, addressing water intrusion through a significant crack in the basement's foundation wall. The intrusion was effectively sealed, ensuring a dry and stable environment. No mold or odors were present, providing an added assurance of a clean space. The approximate job cost was $4,400, delivering peace of mind against future water damage.


October 2, 2025 Near Johnsburg, IL

We addressed a water entry issue in Sue's basement, likely originating from a window. Our team installed a waterproofing system featuring interior drainage and a sump pump to prevent future water intrusion. This solution offers long-term protection, ensuring Sue's basement stays dry and functional. The project was completed for around $4,500.


September 30, 2025 Near Bristol, WI

Addressed significant foundation issues for Dawn in zip code 60041. Our team focused on stabilizing tilting foundation supports and sagging joists to ensure stability. Approximate cost of the project was $21,900, tailored to the structural needs.


September 29, 2025 Near Ingleside, IL

We've addressed a waterproofing need in the crawlspace for Richard in the 60041 area. The client, unable to assess the extent of water intrusion himself, required a thorough examination and waterproofing solution. With an 18" opening, our team ensured water issues were mitigated. The project, valued at approximately $4,200, provides relief and protection against moisture.


September 28, 2025 Near Ingleside, IL

Our team completed a thorough waterproofing project for Devin in zip code 60085. We focused on sealing the area where the wall and floor meet to prevent water intrusion. A robust solution was applied to address cracks in the slab, minimizing the risk of future leaks. The project was valued at around $7,800, ensuring a dry and secure space.


September 19, 2025 Near Waukegan, IL

Recently completed waterproofing and sealing work for Daisy's crawl space in zip code 60085. The area was initially wet and humid, so our team installed a dehumidifier and sealed the crawl space effectively. These measures not only address moisture issues but also increase overall structural integrity. The project was priced at around $12,400.


September 16, 2025 Near Waukegan Township, IL

Recently addressed significant drainage issues in Uwe's yard located in zip code 53177. The installation of a comprehensive system, including visible drainage elements and a sump pump upgrade, aims to tackle standing water and prevent minor water intrusion in the basement. This essential project, priced at approximately $11,500, ensures a dry and stable environment.


September 12, 2025 Near Sturtevant, WI

A comprehensive crawlspace encapsulation job has been completed for Maddie in zip code 60060. The project focused on sealing the foundation to prevent moisture issues, addressing previous bio-growth problems, and ensuring a dry, stable environment. This work, carried out for an approximate cost of $20,700, enhances the property's resilience against water-related damage.


August 26, 2025 Near Mundelein, IL

Steven's ranch-style home required essential structural repairs in the crawlspace. The floors were unlevel, doors were sticking, and walls were beginning to separate. To address these issues, we reinforced the foundation with new supports to stabilize the structure and prevent further deterioration. This comprehensive repair is estimated to cost around $18,882.


August 12, 2025 Near Salem Lakes, WI

Roger initiated a foundation repair project in his home, aiming to enhance structural stability. The job involved raising the house and pouring a deeper foundation wall on one side to counteract tipping and prevent water leakage. With planning in progress, Roger is considering an investment around $23,000 for addressing the foundational issues thoroughly. The additional installation of a drainage system offers improved water management, crucial for long-term protection.


August 5, 2025 Near Round Lake, IL

We took on a project for Brenda in zip code 53181, focusing on her back patio and front stoop. Both areas were sloping towards the house and in need of leveling. Using slabjacking techniques, we addressed the tilt and ensured a stable, even surface, avoiding any further sinking. The approximate cost for this repair was around $4,400.


August 1, 2025 Near Twin Lakes, WI

Under Tom's lakefront home, we've embarked on supporting the sinking billiard room. The entire corner has been stabilized with robust foundation supports, addressing the minimal cracks from decades of settlement. This significant repair ensures the structural integrity and safety of the home, with an estimated cost of about $27,000.


July 30, 2025 Near McHenry, IL

Completed a structural repair for Julie in zip code 60051 to fix a sagging floor in the bathroom. This project involved reinforcing the foundation on the opposite side of the kitchen from previous repairs. As a returning client, Julie entrusted us with ensuring the stability and safety of her home, with this particular job cost approximating $4,900.


July 23, 2025 Near McHenry, IL

Completed a repair job on a beam at the front of Samuel's house in zip code 60073. The project involved jacking up and leveling the beam and inspecting additional beams in a small crawlspace. Despite the limited space, we ensured the structure's stability. The repair was approximately priced at $14,185.


July 22, 2025 Near Round Lake Beach, IL

For Anna's home in zip code 60046, we tackled a sagging floor issue in the addition built in the 1980s, resting over a crawlspace. Our team worked to stabilize the structure, ensuring it rests on a solid foundation. This approach helps prevent further structural compromise and enhances the home's safety and integrity. The project was valued at around $10,500.


July 21, 2025 Near Lake Villa, IL

In zip code 60048, we assisted a new homeowner, Daniel, by replacing the vapor barrier in the crawlspace. This accessible area from the basement required a fresh vapor barrier installation to ensure optimal waterproofing as the family prepares for their move. This job, executed swiftly before their scheduled relocation, was valued at approximately $6,500.


July 21, 2025 Near Libertyville, IL

Tackled a recurring water leakage issue in Richard's basement at zip code 53143. The team sealed a troublesome crack in the poured concrete wall that had previously been a problem. This repair, priced around $3,000, aims to provide a lasting solution to stop future leaks and ensure a dry basement environment for the homeowner.


July 15, 2025 Near Kenosha, WI

We recently completed a slabjacking job in a school classroom, advised by a structural engineer as a necessary step. Bruce confirmed it was manageable without commercial intervention. The task was expertly handled to ensure stability, costing approximately $3,300.


June 25, 2025 Near Racine, WI

Addressed a significant sagging issue in the kitchen floor by installing new supports. The floor, affected by a long-term water leak, needed reinforcement to ensure stability. With the supports in place, the structure is now secure and level, effectively resolving the problem at an approximate cost of $12,000. This work was completed in the 60046 area.


June 23, 2025 Near Lake Villa, IL

Addressed water management for a commercial building on a slab in zip code 60081. Our team tackled water intrusion in one corner by implementing effective drainage solutions and sealing potential entry points. This essential waterproofing project enhances the building's durability and prevents future moisture issues, completed for approximately $6,700.


June 10, 2025 Near Spring Grove, IL

Completed a waterproofing project for a commercial building on a slab in zip code 60081. Our team addressed water intrusion issues by installing a drainage system along the foundation to effectively divert water away, ensuring the building remains dry and secure. This essential service was carried out for approximately $6,700.


June 10, 2025 Near Spring Grove, IL

We just completed a detailed encapsulation project for David in zip code 60069. This job involved sealing the crawl space to prevent moisture ingress, creating a dry and stable environment. With considerations for potential basement encroachment, this waterproofing work ensures long-term protection. The project was approximately priced at $3,610.


June 9, 2025 Near Lincolnshire, IL

We tackled a challenging waterproofing project at Stephen's property in zip code 60046. The task involved addressing a leak through the foundation wall, where white salt stains had appeared. After ensuring it wasn't pipe-related, we focused on sealing and reinforcing the area to prevent further moisture issues. This comprehensive job is estimated to cost around $3,600.


June 6, 2025 Near Lindenhurst, IL

Completed a crucial foundation support project for Faith in Waukegan. The installation involved using reinforced bolts and foam insulation to stabilize the structure, addressing significant settling signs. Faith's historic home, dating back to 1872, now has improved stability with a project cost of around $6,700.


June 5, 2025 Near Waukegan, IL

Addressed the sinking driveway slab and adjacent sidewalk for Rod. By implementing slabjacking techniques, we successfully lifted and leveled out the concrete. This solution not only improved the aesthetic but also ensured durability, at an approximate cost of $2,000 in the 53403 area.


June 2, 2025 Near Mount Pleasant, WI

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We want to make your repair process simple and stress-free. When you fill out our contact form, a team member will reach out within 48 hours. We'll ask about your home’s symptoms and schedule an on-site inspection to assess your needs and walk you through next steps.
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Top Rated Sagging Floor Repair

Sagging floors can be a pain to handle. Get expert help today!

We’re your local sagging floor repair experts, servicing Indiana, Kentucky, Illinois, Michigan, Ohio, Missouri, Wisconsin, and Iowa, as well as Western and Central Pennsylvania and Virginia, portions of West Virginia, southeastern Minnesota, eastern Nebraska, and northeast Arkansas.

At Acculevel, we pride ourselves on providing permanent solutions that are always affordable. Our goal is to get the job done right, not push the sale. If you’re looking for more information, connect with one of our project advisors.

For us, it’s not about a hard sell. It’s about finding the solution and stopping the problem at the source. We are committed to always telling you when you need a repair, and when it can wait.

Our Guarantee

Solution

We provide permanent solutions using the most technologically advanced repairs to help keep your home on a safe foundation.

Warranties

Our company always back our work with lifetime warranties and the best customer service in the industry!

Estimates Before

We will not do any unnecessary work after your inspection and estimate is. We encourage homeowners to get estimates before hiring.

Acculevel Service Areas

See What Your Neighbors Think

Real reviews from homeowners on Google
“I was impressed by the level of detail in the consultation. The representative was knowledgeable and friendly, making the process stress-free.”
— Zach K.
“The team at Acculevel was professional and thorough. They answered all my questions and provided a clear plan for my project.”
— Danielle R.
“Acculevel exceeded my expectations. The appointment was informative, and I felt confident in their expertise.”
— Jeremy B.

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Foundation and waterproofing issues only get worse over time. Enter your ZIP code to see if you're in our service area and schedule a free inspection.
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