When this service may fit
- One slab edge sits lower than the adjoining slab
- Water collects near a low spot after rain or irrigation
- A driveway, walk, patio, or pool deck has become a trip edge
- The slab appears mostly intact but no longer sits at the intended elevation
What the inspection should cover
A proposal is more useful when it shows what the provider checked, what target is intended, and what remains uncertain.
- Whether the concrete is structurally intact enough to lift
- The location of voids or unsupported areas
- Drainage, downspouts, irrigation, and soil movement
- Nearby foundations, plumbing, utilities, and expansion joints
- The target elevation and whether lifting could affect adjoining surfaces
Typical project sequence
- Inspect and measure the affected slabs
- Choose an appropriate lifting material and injection plan
- Lift in controlled increments while checking adjacent surfaces
- Seal injection points and review drainage or joint issues
Questions about concrete lifting
Can every sunken slab be lifted?
No. Severely cracked, crumbling, undersized, or poorly reinforced concrete may be a better replacement candidate. An on-site inspection is needed.
Does lifting fix the reason the slab settled?
It restores support and elevation, but drainage, erosion, leaking water lines, or other contributing conditions may also need attention.
Which method is best?
The right method depends on the slab, access, target lift, material preference, schedule, and provider equipment. Compare the proposed material and scope, not just the label.
Evidence behind this answer
Reviewed 2026-07-24. Sources explain the general method or decision. They do not diagnose one property, select a provider, or guarantee a result.
Primary answer
Concrete lifting raises a settled slab by placing material beneath it. It can be considered when the slab is still usable but has lost support underneath.
General decision support only. The cited material does not diagnose subsurface conditions, select a contractor, or guarantee an outcome for one property.Supporting claim
A provider should inspect the slab condition, the direction and amount of settlement, nearby drainage, joints, utilities, and the likely cause before recommending lifting or replacement.
This is an inspection and proposal framework, not proof that a particular slab is suitable for lifting or that one method will achieve the desired target.Supporting claim
A useful inspection considers Whether the concrete is structurally intact enough to lift; The location of voids or unsupported areas; Drainage, downspouts, irrigation, and soil movement; Nearby foundations, plumbing, utilities, and expansion joints; The target elevation and whether lifting could affect adjoining surfaces.
The checklist combines general technical and decision criteria. The appropriate investigation, testing, and professional responsibility depend on the project.Review 4 authoritative sources
RAP-11: Slabjacking
American Concrete Institute
Slabjacking is used to level and align slabs-on-ground affected by settlement, erosion, flooding, or shrinkage of supporting soil or base.
Limit: A voluntary field guide, not a diagnosis, design, bid specification, or guarantee for a particular property.Slabjacking (RAP 11) learning objectives
American Concrete Institute University
Appropriate repair selection, hole layouts, settlement mode, grout-pressure monitoring, and verification are core parts of slabjacking practice.
Limit: Summarizes a professional education module; it does not select a method or target for one slab.Web Soil Survey
USDA Natural Resources Conservation Service
Official mapped soil information and interpretations can provide regional and property-area context.
Limit: Mapped soil data cannot reveal exact fill, compaction, leaks, utilities, erosion, or support beneath one slab.Houston IAH climate normals and annual summaries
National Weather Service Houston/Galveston
Houston-area climate normals document substantial annual rainfall and seasonal temperature conditions relevant to regional drainage context.
Limit: IAH station normals are regional context, not Tomball parcel data or proof that weather caused one slab to move.Request a concrete lifting assessment
No obligation. A request is reviewed for project and coverage fit before it can be shared with one independent provider.
- Which slab or panels are affected
- The observed movement, cracks, water, and fixed constraints
- Photos, ZIP, access, and desired timing