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Avatar for Anderson Concrete Lifting
Anderson Concrete Lifting
5.0(
6
)

Serving Knapp, WI and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

"We were very pleased with the estimating process, quality of the work and the completion our project by Anderson Concrete Lifting. Throughout the process we were treated fairly and with respect. We highly recommend Joe and his crew for your concrete project."
Additional Photos
Response time2 days
2 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for American Waterworks
American Waterworks
4.6(
170
)

Serving Knapp, WI and surrounding areas

Approved

In business since 1989

Free estimates

Warranties offered

"We chose American Waterworks to complete the PolyLevel process on our concrete Gazebo floor. The floor had subdivided into multiple sections and heights. We appreciate American Waterworks' professionalism and workmanship!!"
Another Sinking Floor
Dirt Crawlspace in Elk Mound, WI
Concrete stoop had sunk over 6 inches
Foundation Failure Signs
Increased Efficiency of Crawlspace in Elk Mound

+156

Response time3 hrs
622 neighbors recently requested a quote
Recommended by92%of homeowners
Avatar for Groundworks
Groundworks
4.3(
226
)

Serving Knapp, WI and surrounding areas

Approved (Corporate)

Super Service Award Winner

In business since 2005

Free estimates

Warranties offered

"We had our concrete floors raised as they have settled over the years. Joey and Derrick were the team that did the raising. Fantastic professionals and excellent workmanship. They not only answered our questions but explained why and how the foam worked. I was a home builder for 10 years and can recognize good workman. These two were outstanding. If you need foundation work or concrete floors lifted, give Innovative a call. DON'T SETTLE FOR ANYTHING LESS."
Foundation
Foundation
Foundation
Foundation
Foundation

+16

126 neighbors recently requested a quote
Recommended by86%of homeowners
Avatar for Topline Flooring Solutions
Topline Flooring Solutions
New to Angi

Serving Knapp, WI and surrounding areas

Approved

In business since 2014

Credit card accepted

Offers commercial services

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

Wear surface
Garage floor coating
Wilson's garage
Garage floor coating
Garage floor coating

+5

Response time1 day
Response rate93%
6 neighbors recently requested a quote
Avatar for Smack Concrete LLC
Smack Concrete LLC
5.0(
8
)

Serving Knapp, WI and surrounding areas

In business since 2000

Free estimates

Credit card accepted

"It went great. Spencer was very informative, professional, and cared about my needs. The job was completed as he describes, on time, and the end product exceeded my expectations. I would highly recommend and refer him to anyone needing concrete work."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+5

Recommended by100%of homeowners
Avatar for Colonial Chimney
Colonial Chimney
5.0(
2
)

Serving Knapp, WI and surrounding areas

In business since 1999

Free estimates

Emergency services offered

We have been sharing our experience in reliable and professional chimney inspection, maintenance and repair for years; Just as in masonry work, we master the art of offering our clients impeccable service.\n

Masonry chimney  repair
Masonry chimney  repair
Chimney Repair Project
Masonry Project
Chimney Repair Project

+6

Recommended by100%of homeowners
T.A.P Concrete Masonry, LLC
New to Angi

Serving Knapp, WI and surrounding areas

In business since 2021

Free estimates

Credit card accepted

T.A.P Concrete Masonary is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

Concrete Leveling questions, answered by experts

The polyurethane used for polyjacking will expand and cure in 15 to 30 minutes. After that point, your slab will be safe to walk on and even drive on in the case of a sidewalk or concrete driveway. Double-check with your concrete lifting specialist to confirm a curing timeline, as products can differ.

Concrete leveling can last anywhere from five to 10 years or more, and in some cases, it can be a permanent solution. The longevity depends on the method used and whether the underlying cause of the sinking is addressed. For example, mudjacking typically lasts five to 10 years, while polyjacking can last for 20 years or more. It's best to consult a professional for an accurate timeline based on your specific situation and any factors that could cause the issue to recur.

Pros often use mudjacking or polyurethane foam injection to level a sunken concrete patio. Both methods lift the slab by filling voids beneath it. After properly compacting the soil beneath it to prevent future settling, the concrete may need to be removed and re-poured for severe sinking.

Polyjacking and mudjacking can both be effective solutions for sinking concrete, but they have key differences. Polyjacking, which uses expanding polyurethane foam, is often considered a better option because the foam is significantly lighter than the cementitious material used for mudjacking. This reduced weight puts less pressure on the underlying soil and lowers the risk of future sinking. Polyjacking is suitable for any sinking concrete slab, while mudjacking is typically only recommended for non-structural concrete, such as sidewalks, patios, pool decks, and driveways. The primary drawback of polyjacking is its cost, which can be up to four times higher than mudjacking—as much as $25 per square foot compared to a maximum of about $6 per square foot for mudjacking.

Yes, expanding foam (also known as polyurethane foam) can lift concrete. This approach, called polyjacking, involves injecting the foam rather than concrete slurry to fill voids and raise the concrete slab back into place. It’s often faster and requires smaller drill holes than traditional mudjacking, though it may come at a higher cost. Some contractors also prefer polyjacking over mudjacking for more damaged and delicate slabs.

The Knapp, WI homeowners’ guide to concrete leveling services

From average costs to expert advice, get all the answers you need to get your job done.