When this service may fit
- The slab is suitable for controlled lifting
- Smaller injection ports are important to the owner
- The provider has equipment and training for the selected product
- Access and project conditions fit the manufacturer and contractor plan
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.
- Slab condition, voids, and target elevations
- Product system and installation limitations
- Nearby utilities, drains, foundations, and pool components
- Expansion control and monitoring plan
- Written warranty and return-to-use guidance
Typical project sequence
- Map ports and protect surrounding finishes
- Inject in measured stages while checking elevation
- Stop at the agreed target and verify transitions
- Patch ports and provide product-specific instructions
Questions about polyurethane foam leveling
Is all lifting foam the same?
No. Product chemistry, density, equipment, training, and installation procedures vary. Ask which system will be used and why it fits the project.
Can expanding foam over-lift a slab?
Poorly controlled injection can create unwanted movement. The provider should work in small stages and monitor fixed points throughout the lift.
Does foam solve drainage problems?
Changing slab elevation may improve a surface slope, but downspouts, grading, leaks, or erosion can require separate correction.
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
Polyurethane foam leveling injects a two-part expanding material beneath concrete to fill space and raise the slab in controlled stages.
General decision support only. The cited material does not diagnose subsurface conditions, select a contractor, or guarantee an outcome for one property.Supporting claim
Products and installation requirements vary. The proposal should identify the product system, intended lift, injection pattern, finish, warranty terms, and return-to-use instructions.
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 Slab condition, voids, and target elevations; Product system and installation limitations; Nearby utilities, drains, foundations, and pool components; Expansion control and monitoring plan; Written warranty and return-to-use guidance.
The checklist combines general technical and decision criteria. The appropriate investigation, testing, and professional responsibility depend on the project.Review 5 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.Injected polyurethane slab jacking: final report
Oregon Department of Transportation and Federal Highway Administration
Injected polyurethane has been studied as an alternative method for raising and stabilizing in-place concrete slabs, with monitored field performance and material testing.
Limit: A specific transportation research project from 2002, not proof that every product, installer, or residential project performs the same way.View 2 process demonstrations
Videos are included to show equipment and sequence. Manufacturer or contractor marketing is not treated as independent proof of lifespan, superiority, price, or suitability.
Raising Commercial Concrete Slabs with PolyLevel
Supportworks
Shows one proprietary polyurethane-lifting workflow, including drilling, injection, expansion, and slab movement.
Limit: Manufacturer marketing demonstration. Product claims, port size, timing, environmental claims, and performance are specific to that system and must not be generalized.Slab lifting video library
Prime Resins
Shows several polyurethane slab-lifting and soil-stabilization applications and equipment configurations.
Limit: Manufacturer demonstrations, not independent comparative research or proof of suitability for a particular property.Request a polyurethane foam leveling 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