Foundation Repair & Basement Waterproofing in Sioux City, IA

Does your home or commercial property have bowing foundation walls, sinking concrete slabs, leaky windows in the basement, or clogged gutters? There is no reason to worry — Thrasher is your trusted expert, providing solutions for these problems and so much more since 1975.

Contact Thrasher to schedule a free inspection and cost estimate on any of our reliable services, including basement waterproofing, foundation repair, crawl space encapsulation, concrete repair, and gutter installation. We proudly serve Sioux City, IA and nearby areas.

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Testimonials From Sioux City
I selected Thrasher because of high humidity levels and mold in our basement. We also had water coming in through the walls and ground.
Testimonial by Kari W. from Sioux City, IA
We called Thrasher because we understand that we need to do something to keep the problem from getting worse. Charles (sales rep) did an excellent job. We...
Testimonial by Connie G. from Sioux City, IA
I'm sure other companies have similar products but I'm more likely to go with the company that is locally based and has knowledgeable and kind staff
Testimonial by Ashley P. from Sioux City, IA
Reviews From Sioux City
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Durable foundation repairs in Sioux City

No matter how small the foundation damage may seem, problems can worsen and impact other areas of a home or building, leading to issues like sticking windows and doors, cracked drywall, a tilting chimney, and moisture intrusion. From cracked foundation floors to bowing basement walls and foundation settlement, Thrasher provides permanent solutions for these structural problems and more.

Foundation Problems We Fix:

  • Foundation settlement & sinking
  • Sticking windows & doors
  • Tilting chimneys
  • Tilting & bowing walls
  • Cracked foundation walls & floors
  • Collapsing retaining walls
  • Sagging crawl space
  • Uneven floors

Our Foundation Repair Products:

  • Crawl space support posts
  • Push piers & helical piers
  • Wall anchors
  • Street creep repairs
  • Foundation wall brace & beams
  • Carbon fiber wall straps
  • Foundation settlement repair
  • Foundation crack repair

Schedule a free foundation inspection and service estimate to get personalized repair solutions for your property. We proudly serve Sioux City and nearby areas in Iowa.

Lasting basement waterproofing system in Sioux City

If your home or building has leaky egress windows, damp walls, excess condensation, mold, or other moisture intrusion problems, contact the basement waterproofing experts at Thrasher.

We can eliminate basement flooding and leaking with a patented waterproofing system customized to suit any property, creating a dry below-grade space and keeping it that way for years to come! We proudly serve Sioux City and nearby areas in Iowa.

Schedule a free basement waterproofing inspection and service estimate to learn more. We proudly serve Sioux City and nearby areas in Iowa.

Our basement waterproofing system includes:

  • Interior drainage systems
  • Sump pumps
  • Replacement egress windows
  • Window wells
  • Mold treatment
  • Dehumidifiers

Crawl space repair & encapsulation services in Sioux City

Do you have a musty, wet, and humid crawl space in your home or building? Don’t deal with the mess on your own. Contact the crawl space encapsulation and repair professionals at Thrasher! We provide a suite of crawl space solutions designed to create a drier, more secure area, including a moisture-proof vapor barrier, crawl space doors, crawl space support jacks, and more.

Concrete repair & concrete leveling experts in Sioux City

If you’re tired of sinking, cracked driveways, pool decks, sidewalks, or other concrete slabs around your property, contact the concrete repair professionals at Thrasher. We offer simple, innovative solutions that are far superior to the standard mudjacking or concrete replacement. Our cracked concrete repair, concrete leveling, and concrete sealing systems install with no mess and no stress. Plus, they are quick to cure, so you can use your slabs soon after installation.

Never worry about UV rays, debris, gas, water, or other liquids ruining your slabs. Our solutions are incredibly durable and address the underlying cause of concrete damage, meaning you get lasting results that save you money!

Schedule a free concrete repair estimate to learn more. We proudly serve Sioux City and the surrounding areas.

Our concrete repair solutions:

  • PolyLevel® concrete leveling
  • NexusPro™ cracked concrete repair
  • SealantPro™ concrete sealing
  • Commercial concrete repairs
  • Driveway repairs
  • Pool deck leveling
  • Sidewalk repairs
  • Step repairs

Durable aluminum gutters, downspouts, & gutter guards in Sioux City

Creating a dry, secure property starts with having the best gutter system. If you have leaky gutters that easily clog or sag under heavy loads, then the water that spills over can ruin roofing, siding, landscaping, and even seep into the home or building through the foundation. That is why Thrasher offers the Gutter Shutter system, guaranteed to never clog, sag, or pull away.


The Thrasher Difference.

No matter the job - we aren't going to feel good about the hard work we've done until you're happy. So we'll do it right or make it right. That's the Thrasher promise.

For the last 45 years in the basement and foundation repair industry, we've focused on the value of doing whatever it takes to get the job done and "wow" our customers every step of the way.

Explore The Thrasher Difference

Before and After Pictures from Sioux City
Concrete problems resolved in Sioux City, IA

Concrete problems resolved in Sioux City, IA

Before After
Concrete problems resolved in Sioux City, IA Concrete problems resolved in Sioux City, IA

Rori S. takes great pride in how her home looks. She has been dealing with ugly concrete slabs for a while. She had someone she knew attempt to repair them for her and they settled again. She didn't want to spend any more time and money on them and wanted something that will permanently fix the issue making her home look good and maintaining its value

The back patio gets a lot of water and she never wanted to deal with those issues again. We lifted and leveled the areas she was struggling with. On the driveway we put in CompressionGuard to prevent damage from street creep and sealed all cracks in joints to prevent water from saturating the soil.  

Case Studies From Sioux City
The foundation of a building on the campus of Western Iowa Tech Community College (WITCC) was in trouble. One end of the building seemed to be...
Foundation push piers helped to correct the foundation settlement occurring for this home in Valley Center, Kansas. Exterior wall cracks were...
The garage had settled 3 inches at the lowest point. By installing resistance piers, Thrasher corrected the foundation settlement. The homeowner...
This Leavenworth house was built above a crawl space with cinder block walls; one wall was beginning to collapse. Thrasher’s foundation repair...

Recent job requests in Sioux City, IA

Neighborhood: Navaho Cir, Sioux City, 51104

I have a retaining wall along my driveway that is leaning in.

Neighborhood: Blackstone Ave, Sioux City, 51104

My sidewalk is raising do to erosion issue.

Neighborhood: Old Lakeport Rd, Sioux City, 51106

I've done a 4-day charcoal test our home (in a the main living area of the basement) and our results came back with a reading of 4.2 pCL. Then I did a follow-up test back in my sons' basement bedroom and got a reading of 5.2. I know that the recommendation is to mitigate for all readings over 4.0, but our living arrangements are fairly short-term (about two years total) and I'd like to know the severity of being exposed to 5.2 for 2 years, pricing to mitigate, and the extent of the mitigation process. Thank you!

Neighborhood: Sioux City, 51104

Water coming in basement

Neighborhood: S Helen, Sioux City, 51106

Leaking basement wall.

Neighborhood: Ridge Ave, Sioux City, 51106

I have water coming in my basement, not from a sewer line.

Neighborhood: Stoneridge Court, Sioux City, 51106

I am looking for a radon test to be completed. I have used a test kit from department of health and the results suggested we seek a longer term test. Results were: * Radon Test Result = 3.3 pCi/L * Test Started 02/12/18 at 9:00 pm * Test Ended 02/16/18 at 7:00 am * Location Basement hall

Neighborhood: Myrtle, Sioux City, 51103

Wet basement

Neighborhood: Sioux City, 51104

Looking for free estimate. Water seeping through either wall or window in basement

Neighborhood: W. Highland Ave, Sioux City, 51103

Just bought new home never had a crawl space before. Just wanted it evaluated and identity problems

Neighborhood: Pawnee Pl, Sioux City, 51104

Crack on inside of concrete block foundation wall. In the process of purchasing this house. Need to inspect before purchase.

Neighborhood: Polk St, Sioux City, 51108

Neighborhood: Idlewood St, Sioux City, 51104

We are looking to put in an egress window in our basement. And was wondering how much it would be.

Neighborhood: Douglas Street, Sioux City, 51105

I need multiple above ground egress windows to replace double hung windows in bedrooms.

Neighborhood: Sioux City, 51104

Need to replace 2 existing window wells.

Neighborhood: Springbrook Drive, Sioux City, 51024

I have about 3 sections of sidewalk in front of my house that I would like quoted for mudjacking / lifting.

Neighborhood: Sioux City, 51104

Moisture in basement and dry wall has mold

Neighborhood: Sunset Circle, Sioux City, 51104

Have water coming into basement from three corners of the house.

Neighborhood: Pierce, Sioux City, 51104

We are current customers (a french drain system with sump pump and air handler), but I want an estimate for some wall work and a possible basement finish.

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