Foundation Repair & Basement Waterproofing in Manhattan, KS

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

Contact Thrasher Foundation Repair to schedule a free inspection and cost estimate on any of our reliable services, including basement waterproofing, foundation repair, crawl space encapsulation, and concrete repair. We proudly serve Manhattan, KS and nearby areas.

Testimonials From Manhattan
Everything was very clean and neat. Thank you! I appreciate that the workmen were able to explain things to...
Testimonial by Jessica S. from Manhattan, KS
The guys were on time, efficient and clean. Very happy.
Testimonial by Jessica S. from Manhattan, KS
Promptly explained what they were going to do, efficient, cleaned up work area. Friendly and courteous.
Testimonial by Ray S. from Manhattan, KS
Reviews From Manhattan
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Durable home foundation repairs in Manhattan

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 Foundation Repair provides permanent solutions for these structural problems and more.

Home 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 House 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 Manhattan and nearby areas in Kansas.

Lasting basement waterproofing system in Manhattan

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 Foundation Repair.

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 Manhattan and nearby areas in Kansas.

Schedule a free basement waterproofing inspection and service estimate to learn more. We proudly serve Manhattan and nearby areas in Kansas.

Our basement waterproofing system includes:

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

Crawl space repair & encapsulation services in Manhattan

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 Foundation Repair! 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 Manhattan

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 Foundation Repair. 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 Manhattan 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

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 Manhattan
Stopping Basement Flooding with Thrasher in Manhattan, KS

Stopping Basement Flooding with Thrasher in Manhattan, KS

Before After
Stopping Basement Flooding with Thrasher in Manhattan, KS Stopping Basement Flooding with Thrasher in Manhattan, KS

This customer fell victim to flooding in their basement when heavy rain struck and the drain tile was unable to provide proper drainage. Referred to us by a company that aided in the cleanup, the homeowner turned to Thrasher for their defense strategy against future water damage.  We installed TripleSafe system which is made with redundancy to ensure water removal even during pump failure or power outages. They can now face storms with confidence using Thrasher's TripleSafe because their basement is fully protected. 

Concrete Repair in Manhattan, KS

Concrete Repair in Manhattan, KS

Before After
Concrete Repair in Manhattan, KS Concrete Repair in Manhattan, KS

Darlene L. is a homeowner in Manhattan, KS, and had watched her front walkway settle severely over the years. With winter right around the corner, she wanted to have the concrete repaired to restore her peace of mind. Familiar with Thrasher and our extensive reputation, she gave us a call to provide our concrete repair solutions.


System Design Specialist Sheldon Sharp arrived at the home in Manhattan, KS, and performed a full inspection of the home’s front walkway. It was determined that soil washout underneath the walkway caused it to sink, making the front step very tall and unsafe. To resolve this, our crews installed our 2-part concrete protection system to lift, level, and seal the settled slabs.


Concrete Crack Repair in Manhattan, KS

Concrete Crack Repair in Manhattan, KS

Before After
Concrete Crack Repair in Manhattan, KS Concrete Crack Repair in Manhattan, KS

This homeowner in Manhattan, KS, had become concerned with the cracks and settling on her driveway. They didn't water to seep through the cracks and infiltrate the foundation, a problem we often see. After several bids, they chose Thrasher because of our unparalleled professionalism and attention to detail.

Our crews arrived at the home in Manhattan and immediately went to work installing our 3-part concrete protection system. First, our PolyLevel foam was installed by injecting it underneath all uneven areas to permanently lift and level each slab. NexusPro crack filler was then applied to all cracks and joints to seal off the surface and protect against water damage. Lastly, SealantPro was sprayed onto the entire surface to repel water and prevent surface stains. 

Case Studies From Manhattan
The Bill Snyder Family Football Stadium at Kansas State University (KSU) in Manhattan, KS, underwent renovations, including expanding the seating...
Recent job requests in Manhattan, KS

Neighborhood: Woods Drive, Manhattan, 66503

Cracks in foundation. Want to see if it needs repaired or if it's normal.

Neighborhood: Buttonwood Drive, Manhattan, 66502

House is slab foundation, one bedroom is cracking and sinking and want an estimate on possible polylevel

Neighborhood: KIMBALL AVE, Manhattan, 66502

Doors are no longer closing correctly, cracks in walls getting larger, windows sitting crooked in frame.

Neighborhood: Manhattan, 66503

Service: Foundation cracks or sinking

Neighborhood: Manhattan, 66503

I have a back hall addition that is slab on grade that has been slowly settling over the last few years. The settling seems to have accelerated this year with a rapid one in the last couple of weeks while on vacation. It is now to the point where sheetrock is cracking excessively and I can feel the slope just by standing in the room.

Neighborhood: Moring Glory Circle, Manhattan, 66502

House is sinking down the middle. Large crack developing through the bathroom floor and effecting the walls.

Neighborhood: Sod Lane, Manhattan, 66502

Bi-level house. Crack in garage wall and garage wall sinking possibly causing other smaller cracks in house walls

Neighborhood: Grouse Cir, Manhattan, 66502

Concrete in driveway has settled below garage floor. Need to be raised so level with house.

Neighborhood: Eagles Landing Drive, Manhattan, 66502

The caulking between the expansion joints on concrete driveway have gone bad and need re-sealed.

Neighborhood: Lawrence Rd., Manhattan, 66502

Interested in dehumidifier for basement

Neighborhood: Wickham Road, Manhattan, 66502

Hello, I have sinking in my garage which is causing water leaking into the basement after heavy rains. I would like to know my options and prices to fix this issue. Thank you! Ashten Jackson

Neighborhood: Lookout Drive, Manhattan, 66502

We continue to have water in on corner of the crawl space and the floor is sinking in the middle of the house.

Neighborhood: Park Circle, Manhattan, 66503

We have several cracks in our foundation around the house perimeter that we need to have repaired.

Neighborhood: Terra Heights Dr, Manhattan, 66503

Our concrete driveway is sinking.

Neighborhood: Manhattan, 66502

I have a slab of concrete that is sinking. I would also like an opinion on the foundation of my home.

Neighborhood: Manhattan, 66502

Vertical crack in foundation wall with some apparent movement.

Neighborhood: Manhattan, 66502

Renovating a home that is slab-on-grade. It appears the interior floor slab has started to sink and the top of the walls are pulling away from the ceiling. The roof trusses bar on the exterior walls and seem to be in good condition and not moving.

Neighborhood: Fairchild, Manhattan, 66502

Neighborhood: Manhattan, 66502

Small section of sinking sidewalk

Neighborhood: Manhattan, 66503

Retaining wall settled causing driveway to crack by garage doors
Job Stories From Manhattan, KS
Foundation Repair Services in Manhattan, KS

These homeowners in Manhattan, KS are currently living in Texas, but plan to retire soon and make the home in Manhattan their forever home. To make this happen, they are doing a significant amount of remodeling and need the foundation of the home leveled before following through with anything else. They had a few different contractors come out to the property, but felt they were getting overpriced bids and a lack of detailed explanations. Thrasher came out to the property and performed a thorough inspection and then personally called the homeowners to discuss the findings and variety of solutions we offer. They couldn’t have been happier with our attention to detail and customer convenience.

 After System Design Specialist Micah Waldo and the homeowners decided on a solution, the team was able to begin the project. In one corner of the house there was about an inch and a half of settlement, and the basement floor was severely cracked. In addition, water was seeping in through the broken foundation. To level the corner of the home, they installed ten of our push piers to permanently stabilize the settling foundation. Then, PolyLevel foam was used on the inside of the basement to lift and level the concrete. NexusPro was then used to fill all cracks and joints on the floor where water was entering. Lastly, our WaterGuard waterproofing system was installed to drain all water in order to keep the basement dry year-round.

 The homeowners were amazed at the effectiveness of the solutions we were able to provide for their forever home. We were able to return the foundation of the home to its original state and permanently waterproof the basement to guarantee they won’t have any issues in the future. They utilized a handful of the services we provide and couldn’t be happier they called Thrasher.

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