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Crawl Space Jacks2026-10-27T14:06:22-05:00

Crawl Space Support Jacks in Tampa Bay, Orlando, Miami and Largo

Crawl space jacks provide permanent structural support for sagging, bouncy or uneven floors in Tampa Bay, Orlando, Miami and Largo.

What Are Crawl Space Jacks?

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

Some floors may sit on wood posts, masonry columns or other supports that can deteriorate, settle or shift over time. Adjustable crawl space jacks replace or supplement inadequate supports to restore reliable structural support in the crawl space.

Symptoms

Signs Crawl Space Support Is Needed

Issues 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 pitched floors
  • Springy or uneven floors
  • Gaps where floors meet walls
  • Cracking in drywall or interior finishes
  • Doors or windows that stick
  • Deteriorated support posts or framing: Rot, corrosion or other damage can reduce the ability of existing components to support the floor system.
  • Settled or shifting piers and posts: Existing supports may settle or move, leaving beams and floor joists inadequately supported.
  • Changes to building loads: Remodels, equipment or other added loads may require more support than the existing floor system provides.

These conditions don’t necessarily mean more jack posts are needed. A structural evaluation can determine 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 Ratings

    The SmartJack® system uses engineered steel components built to transfer 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 come down to the supporting soils, footing design and other project conditions.

    • 30-kip allowable capacity of assembled steel components
    • Engineered 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 Structure Down to Soil

    A crawl space support system is only as good as the ground beneath it. While SmartJack steel components have a 30-kip allowable capacity, actual allowable loads may be limited by the bearing capacity of the soil below. 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 for site conditions
    • Considers soil bearing capacity when determining allowable loads
    • Creates a complete load path rather than relying on the post alone

  • Stabilization with Room for Controlled Adjustments

    Adjustable Steel Support

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

    • Adjustable during installation
    • Can help 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.

Inspect the Floor System

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

2.

Map Out Support Locations

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

3.

Prepare the Base

Dig out each support location and install the specified aggregate base and footing to spread loads into the supporting soil.

4.

Install the SmartJack® Supports

Set and secure the adjustable steel support posts beneath 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 can rot, settle or lack the footing and load capacity needed for long-term structural support.

The SmartJack® system pairs engineered steel support posts with adjustable connections and properly designed footings to create a complete load path from the floor framing to the supporting soil.

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

Support You Can Adjust
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.

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

Crawl Space Support You Can Trust in Tampa Bay, Orlando, Miami and Largo

The right crawl space support approach starts with understanding the structure and what is making the floor system sag or move. LRE Foundation Repair reviews the beams, floor joists, existing supports and load conditions to identify where additional support is needed and recommend the appropriate repair.

Contact LRE Foundation Repair to set up an evaluation and get a recommended crawl space support solution for your building.

What To Expect

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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.

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Customer Information

Don't just take our word for it

See what our customers have to say about our work.

When David from High Springs noticed the floors of his historic home starting to sag, he knew it was time to call LRE. 🏠 Our team at LRE Foundation Repair installed the SmartJack System — a durable, adjustable support solution designed to lift, level, and permanently stabilize crawl space floor joists.

Here’s why homeowners trust LRE’s SmartJack system: ✅ Galvanized steel supports that resist corrosion and won’t settle over time ✅ Restores uneven floors to their proper level ✅ Provides permanent stabilization for long-term protection Now, David’s home is stronger, safer, and ready to stand the test of time. Watch to see how LRE helped preserve the integrity of his historic home — and hear what David had to say about his experience!

David V. | High Springs, FL

Norbert’s driveway, walkway, and front porch in Gainesville, FL had settled over time, creating uneven surfaces and serious tripping hazards that had even caused previous injuries. After contacting LRE Foundation Repair, our team lifted and leveled the slabs with PolyLevel and sealed the cracks with NexusPro for long-lasting protection. Norbert was very pleased with the results and our team’s professionalism.

We’re grateful he shared his experience and helped other homeowners learn about reliable, long-term concrete repair solutions

Norbert M. | Gainesville, FL

When Toby bought his new home in Beverly Hills, Florida, he noticed water pooling along the side of his driveway and in front of his garage, caused by the slope directing water toward the house. Our team at LRE designed and installed a custom exterior drainage system to fix the problem for good. We added an enhanced channel drain in front of the garage, connected it to an underground drainage pipe, and tied in the home’s downspouts to safely redirect water away from the foundation.

Now, Toby’s property stays dry and protected — and he couldn’t be happier with the results!

Toby A. | Beverly Hills, FL

Scott and Carrie from Belleview were preparing to sell their home, but noticed that the cracks in their concrete pool deck were discouraging potential buyers. That’s when they reached out to us at LRE for help.

After our Customer Care team scheduled an appointment with one of our expert Design Specialists, we inspected the pool deck and developed a repair plan using our Two-Part Concrete Protection System — combining PolyLevel to lift and level the slabs, and NexusPro to seal the cracks and prevent future damage.

Scott and Carrie were thrilled with the transformation and the professionalism of our team — and they’re excited to share their wonderful experience! 🎥 Watch their story and see how LRE helped restore their pool deck and peace of mind!

Scott & Carrie D. | Belleview, FL

Christine and Scott in Leesburg, FL, noticed significant settlement inside and outside their home, with large cracks in their walls and tile flooring. Seeking a permanent solution, they turned to LRE Foundation Repair. Our team installed helical piers, interior slab piers, and PolyLevel to fully stabilize their home. Now, they have peace of mind knowing their home’s foundation is finally permanently secure.

Christine & Scott R. | Leesburg, FL

After noticing exterior wall cracks and doors that wouldn’t close properly, Mary knew her home needed help. Previous repairs had failed, leaving her without a lasting solution or a company to stand behind the work. In this testimonial, Mary shares how LRE Foundation Repair permanently stabilized her home and restored her peace of mind with proven solutions, lifetime transferable warranties, and double-backed warranty protection.

Mary Anne S. | Brooksville, FL

When Frank in Spring Hill, FL, noticed cracks in his walls, he turned to LRE Foundation Repair. Our Design Specialist confirmed foundation settlement and designed a plan using helical piers and a new exterior drainage system to stabilize the home and redirect water. With the repairs complete, Frank was thrilled with the results. Watch the video to see how LRE restored his home and peace of mind.

Frank N. | Spring Hill, FL

Patrick from New Port Richey noticed water entering through his home’s slab foundation during last year’s hurricanes and contacted LRE Foundation Repair for help. Our team installed a custom exterior drainage system, including a French drain to collect and redirect rainwater to a relief drain away from the home. We also connected his downspouts directly into the subsurface system to stop water from pooling near the foundation. The result? A dry, protected home — and one very happy homeowner.

🙌 Watch as Patrick shares his experience and see how LRE Foundation Repair helped protect his home from future flooding! 🌧️🏠

Patrick G. | New Port Richey, FL

When Terry purchased his new home in Tarpon Springs, his home inspector discovered a serious issue — the floor joists were being supported by makeshift car jacks! 😬 Looking for a long-term solution, Terry reached out to LRE Foundation Repair. Our team installed the SmartJack® System, providing strong, durable, and permanent support for the home’s floors.

Terry was so impressed with the results that he shared his incredible experience with us! 🙌 🎥 Watch his story to see how we helped restore lasting stability and peace of mind.

Terry C. | Tarpon Springs, FL

When Carin and Jon from Tampa, Florida, noticed buckling in the wood floors of their 1950s historic home, they suspected something was wrong beneath the surface. That’s when they called us at LRE Foundation Repair for a complimentary crawl space inspection. In this customer testimonial, hear directly from Carin and Jon as they share their experience—from the first inspection to the final results. Our expert Design Specialist identified major moisture issues in their crawl space, and our team got to work installing the CleanSpace™ Crawl Space Encapsulation System to create a dry, healthy environment under their home. Watch their story to see how we helped protect their home for years to come!

Carin & Jon B. | Tampa, FL

Before & after photos

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

  • Concrete driveway repair in San Antonio, FL

    The LRE team utilized our PolyLevel Solution to not only bring the concrete slabs back to an even, safe level but also fill the void underneath and permanently stabilize the driveway.

  • Channel drain solution in Seminole, FL

    The LRE team installed a 4″ channel drain within the pool deck’s concrete to collect rainwater and divert it away from the home through a subsurface drainage system.

  • Crawl space repair in Dunedin, FL

    To repair sagging floor issues, LRE used SmartJacks, made from galvanized steel, and our Crawlspace Encapsulation System to control moisture, air flow, and stabilize the structure.

View All Before & Afters

Proudly Serving Florida

LRE Foundation Repair is the local expert for Foundation repair and concrete repair and more. We proudly service Orlando and all of Florida.

Crawl Space Jacks FAQs

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

Cost comes down to how many SmartJack® supports are required, their placement and height, footing requirements, crawl space access and whether beams, joists or other structural components also need repair. LRE Foundation Repair can evaluate the floor-support system and give pricing based on the recommended repair design. 

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

Often, yes. Because SmartJack® installation usually takes place from within the crawl space, major demolition of the occupied space above may not be necessary. Access requirements, structural conditions and the scope of repair determine whether any areas of the building must be temporarily restricted. 

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

How long installation takes depends on how many supports are needed, crawl space access, existing framing, footing requirements and whether other structural repairs are needed. Many projects can be completed with fairly limited disruption because the work happens 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 can be used to replace deteriorated wood posts when they are part of the building’s support system. Any rot or damage in the beams or joists being supported should also be addressed, because installing 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 require a properly designed base to distribute loads into the soil, but that doesn’t 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 come down to 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 use an adjustable connection that permits controlled adjustments during installation and, when appropriate, at a later date. That can be useful if additional correction of the supported floor system is needed. 

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

Yes. SmartJack® is engineered 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 raise sagging beams and floor framing toward a more level position while stabilizing the floor system. How much correction makes sense 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, letting the system 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 carry an allowable capacity of up to 30 kips, or 30,000 pounds. However, 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 reviewed based on the structure and loads being supported.

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