Foundation Jack Installation in Omaha, Grand Island, Wichita, Kansas City, Springfield, Denver & Sioux City

House jacks typically repair sagging floors in crawl space foundations. This method is a quick and safe solution to support and re-level floor joists that are sagging and uneven due to foundation settlement, moisture damage, or wood rot in the crawl space.

SmartJack® is a highly engineered and tested foundation jack system installed by our foundation repair specialists to fix sloping and sagging floors over crawl space foundations in Omaha, Kansas City, Wichita and throughout Nebraska, Iowa, Missouri, Kansas, Illinois and Colorado. Before the problem gets worse, contact Thrasher to schedule a free sagging floor repair estimate!

SmartJack® for sagging crawl space repair

Thrasher uses the SmartJack® house jack solution to support and re-level sagging floor joists in crawl space foundations.

What is a House Jack?

Crawl space foundations settle over time, contributed by erosion, soil type, and excess moisture. We place a foundation jack or house jack under a sagging floor joist to lift and support it. The goal is to achieve a level floor system and avoid foundation failure.

House Jack Terminology

House jacks or foundation jacks are the typical solution to jack up a sinking foundation or sagging floor. You can also refer to jack posts used in a sagging crawl space foundation as crawl space jacks. Regardless of the name, the SmartJack® solution offers a fast, reliable method of restoring your sagging floors, available exclusively through trained dealers, including Thrasher Foundation Repair.

The Permanent Solution for Sagging Floor Joists: SmartJack®

A safer & quicker method for sagging floor repair in Nebraska, Western Iowa, Central & Western Kansas and Northwestern Missouri



When floors in the home start to sag, it signals a possible problem in the crawl space underneath, often wood rot or changes in the soil. Sinking foundations and sagging floor joists can cause unsafe, uneven floors. When a serious structural problem causes sagging floors, you may notice other symptoms inside and outside the home, including foundation cracks, leaning or bowing walls, wall and ceiling cracks, or sticking doors and windows. Support columns in the crawl space that weren't spaced properly during construction can also cause beams and floor joists to sag.

SmartJack® is a leading foundation jack solution for fast, safe, and effective sagging floor repair. Also, installing our crawl space encapsulation and SmartJack® system together can provide a complete solution to address the underlying soil conditions that cause sinking foundations and sagging floors.

Advantages of SmartJack®

  • Fast installation & results: Thrasher can install SmartJack quickly, any time of year, and immediately lifts sagging, sloping floors back to level.
  • Durable, heavy-duty construction: Zinc-plated and galvanized steel components prevent rust for a durable, long-lasting solution.
  • Heavier load support: Capable of supporting loads that exceed the standard residential home.
  • Long-lasting guarantee: SmartJack is backed by a 25-year warranty against manufacturing defects for your peace of mind.
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How SmartJack® Levels and Supports Sagging Floors

SmartJack® installation is a quick and safe solution that won't interrupt your living space or the surrounding landscape. This simple four-step process is how your SmartJack® installer will re-level your sagging floor joists back to their original position and prevent future movement.

1. Before the Installation

Before getting started on the installation, your structural repair specialist will evaluate your crawl space foundation and design a crawl space support system to restore your home's structural stability. They will determine the location for each crawl space support to ensure an efficient, seamless installation of your crawl space support system. Your foundation professional will then meet with you to explain the installation process and answer any questions you may have about your crawl space repair.

2. Placing the Footings

Once the installation begins, your installers will dig a 2-foot square, 2-feet deep hole at each SmartJack® location. They will then place a base, also called a footing, on top of the engineered fill. The footings create a stable base for the steel jack posts and keep the posts vertical. This allows for optimum weight-bearing distribution across a wide area of soil. The fill base underneath the footing offers strong support that resists moisture and won't settle or shift.

3. Cutting the Jack Posts to Length

Once the footings are placed, the installers will measure and cut foundation jacks to the appropriate length for the height of your crawl space.

4. Assembly & Tightening

After the foundation jacks are cut to length, the installers will place each jack post in the crawl space, mount the top of the crawl space jack against the girder, and check that each jack is exactly vertical.

If there's girders that have been damaged by rot or girders that are too small, your technicians will install a new sister girder next to the original to reinforce and strengthen the structure.

Finally, each SmartJack® is tightened to help lift the floor back to its original position. The house jacks can be adjusted in the event that future tightening is necessary. SmartJack® is proven to level sagging floors and prevent future movement.

Don't Wait to Fix Your Sagging Foundation: Get a Free Estimate Today!

Lifting sagging floor joists back to their proper level is accomplished safely and quickly with SmartJack®. Because the SmartJack® foundation jacks are adjustable, we can install them to the exact height of your floor joists and adjust them over time in the event of future settlement.

If your floor or foundation shows signs of sagging or sinking, it's time for fast, effective sagging floor joist repair. SmartJack® is a quick and effective technique to jack up sagging floors and sinking crawl space foundations, accomplished by trained and experienced foundation repair contractors. To learn how we can help permanently support and re-level your sagging floors, contact Thrasher to schedule a free estimate today!

Get a Free Estimate

Give us a call at 1-844-948-3306 or complete this form and we'll contact you shortly to schedule a Free Inspection, and you'll get a no-obligation written quote during our initial visit.
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We serve the following areas

  • Anchor
  • Arrowsmith
  • Ashkum
  • Beaverville
  • Bellflower
  • Buckley
  • Cabery
  • Campus
  • Chebanse
  • Cissna Park
  • Claytonville
  • Clifton
  • Crescent City
  • Cropsey
  • Cullom
  • Danforth
  • Donovan
  • Dwight
  • Emington
  • Fairbury
  • Forrest
  • Gibson City
  • Goodwine
  • Iroquois
  • Kempton
  • Loda
  • Martinton
  • Odell
  • Onarga
  • Papineau
  • Paxton
  • Piper City
  • Pontiac
  • Roberts
  • Saunemin
  • Saybrook
  • Stockland
  • Strawn
  • Thawville
  • Watseka
  • Woodland
  • Wellington
Our Locations:

Thrasher Foundation Repair
11844 Valley Ridge Drive
Papillion, NE 68046

Thrasher Foundation Repair
11844 Valley Ridge Dr
La Vista, NE 68046
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Thrasher Foundation Repair
3721 W Old Potash Hwy
Grand Island, NE 68803

Thrasher Foundation Repair
15601 W 113th St
Lenexa, KS 66219

Thrasher Foundation Repair
1120 S Lewis Blvd
Sergeant Bluff, IA 51054

Thrasher Foundation Repair
1619 N Packer Rd Suite 104
Springfield, MO 65803

Thrasher Foundation Repair
8853 E 37th St N
Wichita, KS 67226

Thrasher Foundation Repair
9652 Hanover Ct W
Henderson, CO 80640

Thrasher Foundation Repair
8910 N Industrial Rd
Peoria, IL 61615

Thrasher Foundation Repair
2140 330th Ave
Fort Madison, IA 52627

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