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Crawl Space Jacks2026-10-22T15:50:26-05:00

Crawl Space Support Jacks in [Target Location]

Crawl space jacks provide permanent structural support for sagging, bouncy or unlevel floors in [Target Location].

What Are Crawl Space Jacks?

Crawl space jacks are adjustable steel support posts installed beneath beams, girders and joists to stabilize sagging, bouncy or uneven floors. These crawl space jack posts carry structural loads down to stable footings below as part of an engineered crawl space repair system.

Some floor systems may depend on wood posts, masonry columns or other supports that can deteriorate, settle or move over the years. Adjustable crawl space jacks replace or supplement inadequate supports to restore dependable crawl space structural support.

Symptoms

Signs Crawl Space Support Is Needed

Problems with the beams, floor joists or supports in a crawl space often show up in the floors and finishes above. Signs the floor system may need added structural support include:

  • Sagging or sloped floors
  • Bouncy or uneven floors
  • Gaps between floors and walls
  • Cracks in drywall and interior finishes
  • Sticking doors or windows
  • Deteriorated support posts or framing: Rot, corrosion or other deterioration can reduce the ability of existing components to support the floor system.
  • Settled or shifting piers and posts: Existing supports can settle or move, leaving beams and floor joists without adequate support.
  • Changes to building loads: Remodels, equipment or other added loads may require more support than the existing floor system provides.

These signs don’t necessarily mean more jack posts are needed. A structural evaluation can pinpoint the cause of the movement and show whether crawl space support jacks, framing repairs or another solution is appropriate.

SmartJack® Capacity & Performance

  • Built to Support Significant Structural Loads

    Engineered Load Capacity

    The SmartJack® system relies on engineered steel components designed to move loads from the beam or girder above to the supporting soils below. The assembled steel components carry an allowable system capacity of 30 kips (30,000 pounds). Actual allowable loads for an installed system depend on the supporting soils, footing design and other project conditions.

    • Assembled steel components rated to a 30-kip allowable capacity
    • Designed for axial compression loads
    • Supports beams, girders and joists
    • Engineered steel components intended for structural support

  • System Capacity Depends on More Than the Jack Post

    Support from the Framing to the Soil

    A crawl space support system is only as effective as the soil supporting it. While SmartJack steel components are rated to a 30-kip allowable capacity, actual allowable loads may be limited by the bearing capacity of the underlying soil. Proper footing design helps distribute structural loads and reduce the potential for settlement.

    • Carries loads through the post and footing into supporting soils
    • Footing requirements can be designed around site conditions
    • Considers soil bearing capacity when determining allowable loads
    • Provides a complete load path rather than relying on the post alone

  • Stabilization and the Ability to Make Controlled Adjustments

    Adjustable Steel Support

    SmartJack support posts feature an adjustable connection that allows the system to be tightened during installation. When conditions allow, controlled adjustments may also help improve sagging or uneven floor areas. The system can be adjusted later if additional correction is appropriate.

    • Can be adjusted during installation
    • Helps stabilize sagging beams and floor joists
    • May let floors be lifted toward a more level position
    • Can be adjusted again if conditions require it

How Crawl Space Jack Installation Works

1.

Assess the Floor System

Review the beams, floor joists, existing supports and areas of sagging or movement to understand the structural conditions.

2.

Map Out Support Locations

Pinpoint where SmartJack® support posts are needed based on the floor framing, existing supports and load requirements.

3.

Prepare the Base

Excavate each support location and install the specified aggregate base and footing to distribute loads to the supporting soil.

4.

Install the SmartJack® System

Position and fasten the adjustable steel support posts under the beam or girder to build a load path from the floor system to the footing below.

5.

Adjust & Check Support

Make controlled adjustments to stabilize the floor system and, where conditions allow, help lift sagging areas toward a more level position.

Why Choose SmartJack® Over Other Crawl Space Support Posts?

Not every post installed beneath a floor system provides the same level of support. Wood posts, masonry piers and temporary jack posts may deteriorate, settle or lack the footing and load capacity required for long-term structural support.

The SmartJack® system brings together engineered steel support posts, adjustable connections and properly designed footings to establish a complete load path from the floor framing down to the supporting soil.

Engineered Steel Construction
SmartJack® is engineered as a structural support system rather than an improvised or temporary floor support.

Adjustable Structural Support
The system can be adjusted at installation to stabilize the floor framing and, when conditions allow, help lift sagging areas toward a more level position.

Engineered for the Load Below
SmartJack® footings distribute structural loads to the supporting soil, helping address one of the common causes of settled or inadequate crawl space supports.

Crawl Space Support You Can Trust in [Target Location]

The right approach to crawl space support begins with understanding the structure and what is causing the floor system to sag or move. Legacy Supportworks evaluates the beams, floor joists, existing supports and load conditions to identify where additional support is needed and recommend the appropriate repair.

Contact Legacy Supportworks to schedule an evaluation and receive a recommended crawl space support solution for your building.

What To Expect

Ready to get started?

Schedule a free estimate to start your journey with Legacy Supportworks.

Schedule your inspection

Fill out our form or give us a call to book your inspection. Share what you’ve noticed so we can send the right expert to your home.

Full home
inspection

An expert will inspect the problem area and surrounding conditions, including soil movement, drainage, structural integrity, and any related concerns.

Clear explanation
of findings

We’ll walk you through what we’re seeing in easy-to-understand language so you know the root cause of the issue, not just the symptoms.

Review recommendations

If repairs are needed, we’ll outline your options, pricing, and timeline so you can make the best decision for your home.

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Customer Information

Don't just take our word for it

See what our customers have to say about our work.

Legacy SupportWorks was referred to me by Bernie Sanders with Sir Speedy. When doors began to not close properly and there were noticeable gaps between the floor and molding, we knew it was time to get some foundation work done on our home. We shopped around and were pleased with the value and responsiveness of Legacy Support Works. I felt comfortable with them in my home, they delivered what they promised when they promised and left my home clean. From Tessa who made the initial contact, to the gentleman putting my carpet back in place, customer service was outstanding.

Sonja Gross | Amarillo, TX

Mike P. from Amarillo, TX hired Legacy Supportworks to help lift and level a sinking kitchen floor with PolyLevel™.In this video he talks about the experience with the company. “We were really impressed that he (the owner) was willing to get in there and work just like a laborer!”

Mike P. | Amarillo, TX

When Karen H. saw some cracks on her wall, she knew something was wrong. She first called a local contractor and they told her that the cracks were being caused by the trees in her backyard. Karen wasn’t convinced by their explanation so she decided to get a second opinion and called Legacy Supportworks. In this video she talks about the experience she had with the company and why she was confident to hire them as the right company for the job. “What we got from Legacy Supportworks was not just a company that will be there for us through the whole process, but be there for us through any other problems that we have in the future”, says Karen.

Karen H. | Lubbock, TX

Legacy Supportworks repaired several cracks in our foundation and stabilized a basement wall that was starting to bow. The process was smooth and the crew worked hard to get everything done right. I would definitely recommend them.

Idali C. | Follett, TX

Legacy Supportworks helped us lift and level our sinking patio with their concrete repair system. It was fast, affordable, and looks fantastic. I wish we had done this sooner!Marissa L.

Marissa L. | Darrouzett, TX

We live in Lipscomb and started noticing cracks in our walls and doors sticking. Shawn from Legacy Supportworks came out and walked us through the foundation repair process. He was very honest and informative. The crew did a great job and our house feels solid again.

Aiden L. | Lipscomb, TX

We had them come out for concrete leveling on our driveway and walkway. The difference is incredible! No more tripping hazards and it looks so much better. The team was friendly and efficient.

Willy R. | Canadian, TX

We had major cracks in our driveway and back patio. The concrete leveling process was quick, affordable, and looks amazing. I couldn’t believe the difference. The team was knowledgeable and made sure we understood the entire process. Great experience!

Jan T. | Farnsworth, TX

Owen and crew were extremely professional and the work corrected my door,window, and brick gaps.

Gary W. | Fritch, TX

We had water coming into our basement and called Legacy Supportworks for basement waterproofing.

Trey G. | Kerrick, TX

Legacy Supportworks fixed the sunken concrete around our shop, and it made a huge difference. No more puddles or cracks getting worse. Great communication from start to finish. Hard to find companies like this these days.

Becky P. | Amarillo, TX

Before & after photos

Check out before and after photos from some of our completed projects.

  • Stabilizing a Crawlspace in Pampa, TX

    This home had crawlspace beams that were cracking and lacked stabilization. 

    Years of shimming had only been a “band-aid” fix and this customer was looking for a permanent solution.

    Our crew installed steel beams and steel smartjacks on engineered fill.

    The result was a permanently stabilized floor!

  • Concrete Repair in Spearman, TX

    A customer reached out after seeing a video of concrete lifting using injection methods and wondered if it could work for their front porch. Their home, built in 1968, features a large concrete porch with a section that originally had a planter between it and the house. At some point, the planter was covered with concrete, which has since sunk about 4 inches. Both sections measure approximately 8×12. While the porch itself was fine, they wanted a solution to lift the concrete over the old planter rather than starting from scratch. Legacy inspected the situation and provided a tailored solution to restore their home.

  • Foundation Repair in Guymon, Oklahoma

    Just four years after adding a first porch for relaxation, a homeowner in Guymon, OK found himself facing a disheartening problem – his beloved porch had settled a shocking 2 feet into the ground, taking his dreams of peaceful rocking chair afternoons with it. As depicted in our before photo, this alarming sinkage rendered the space unusable. To lift and stabilize the sinking structure, we deployed our trusted Push Pier system, meticulously engineered to provide strength and elevation from deep below the surface. The transformation is apparent in the after photo, where the porch now stands level and secure, promising many future years of comfort and stability. At Legacy Supportworks, reviving your home’s foundation to ensure lifelong enjoyment and safety is not just our mission—it’s our commitment to you.

View All Before & Afters

Our service area

Legacy Supportworks is the local expert for Foundation Repair, Concrete Repair & Concrete Leveling and more. We proudly service Lubbock, San Angelo, and all of West Texas & Cimarron County, OK.

Crawl Space Jacks FAQs

How much do crawl space jacks cost?2026-10-06T13:42:28-05:00

The cost depends on the number of SmartJack® supports needed, their placement and height, footing requirements, crawl space access and whether beams, joists or other structural components also need repair. Legacy Supportworks can evaluate the floor-support system and provide pricing based on the recommended repair design. 

Can a building remain occupied during crawl space jack installation?2026-10-06T13:41:43-05:00

Usually, yes. Because SmartJack® installation is typically performed from within the crawl space, extensive demolition of the occupied space above may not be necessary. Access requirements, structural conditions and the repair scope determine whether any areas of the building need to be temporarily restricted. 

How long does crawl space jack installation take?2026-10-06T13:41:10-05:00

Installation time comes down to the number of supports, crawl space access, existing framing, footing requirements and whether other structural repairs are required. Many projects can be completed with relatively limited disruption because the work takes place primarily within the crawl space. 

Can crawl space jacks replace rotted wood posts?2026-10-06T13:40:36-05:00

Yes, crawl space support jacks may be used in place of deteriorated wood posts when they are part of the building’s support system. Any rot or deterioration in the beams or joists being supported should also be evaluated, since setting a new post does not repair damaged framing.

Do crawl space jacks need concrete footings?2026-10-06T13:39:55-05:00

Crawl space jacks need a properly designed base to spread loads into the soil, but that does not always mean a traditional poured concrete footing. SmartJack® installations can use engineered footing configurations chosen according to the loads and site conditions. 

How many crawl space jacks are needed?2026-10-06T13:39:14-05:00

There’s no fixed number. The quantity and spacing depend on framing, beam spans, loads, existing supports and the capacity of the soil and footings below. An on-site evaluation is needed to determine the appropriate number and placement of support posts for the project. 

Can SmartJack® supports be adjusted later?2026-10-06T13:38:36-05:00

Yes. SmartJack® support posts have an adjustable connection that allows controlled adjustments during installation and, when appropriate, at a later date. This can be useful when additional correction of the supported floor system is needed. 

Are crawl space jacks permanent?2026-10-06T13:37:57-05:00

Yes. SmartJack® is built as a permanent structural support system. Unlike temporary jack posts or makeshift supports, it combines engineered steel components with a footing designed to transfer loads from the floor framing to the supporting soil. 

Can crawl space jacks level a sagging floor?2026-10-06T13:37:15-05:00

In many cases, yes. SmartJack® supports can be adjusted to help lift sagging beams and joists toward a more level position while stabilizing the floor system. How much correction is appropriate depends on the condition of the framing, the amount of movement and other structural considerations. 

How do crawl space jacks work?2026-10-06T13:36:33-05:00

Crawl space jacks are set beneath beams or girders to add support for the floor system above. The post transfers structural loads downward through a footing and into the supporting soil. SmartJack® posts are adjustable, which allows the system to be tightened and the floor framing stabilized during installation. 

How much weight can a SmartJack® support?2026-10-06T13:35:47-05:00

The assembled steel components of the SmartJack® system are rated for an allowable capacity of up to 30 kips, or 30,000 pounds. That said, the allowable load for an installed system also depends on factors such as soil bearing capacity, footing design, post height and project conditions. Each application should be evaluated based on the structure and loads being supported.

Related pages

Service Areas

Legacy Supportworks proudly serves Lubbock, San Angelo, and all of West Texas & Cimarron County, OK.

Resources

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The Thrasher Promise

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