The proposal should name the system
Ask for the product or system, intended use, installation approach, and provider training. The answer should connect the product to the slab, target movement, loading, moisture, utilities, and finish requirements.
- Product or material system and intended application
- Port size, pattern, and patch appearance
- Expansion-control and elevation-monitoring plan
- Temperature, moisture, and return-to-use instructions
- Warranty coverage and exclusions
Controlled expansion is the job
Expansion can be useful because material reaches spaces and develops lift, but uncontrolled movement can damage slabs, fixed structures, pool components, or utilities. The provider should inject in measured stages and identify stop conditions.
Foam does not replace diagnosis
Polyjacking can change support and elevation. It does not automatically repair active leaks, drainage, deteriorated concrete, roots, or structural problems. Those conditions belong in the inspection and exclusions.
Questions about what does polyjacking mean?
Is polyjacking the same as spray foam?
No. Structural concrete-lifting systems and consumer gap-filling products are not interchangeable. Ask for the specific professional product and application.
Does polyjacking use smaller holes than mudjacking?
Foam systems commonly use smaller ports, but dimensions and finish depend on equipment and provider. Get the details in writing.
Can polyjacking lift a driveway?
It may be used for suitable driveway panels. Slab condition, target, access, loading, drainage, and nearby structures need inspection.
Why this answer is supportable
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
Polyjacking is concrete lifting with a two-part expanding polyurethane system injected through drilled ports beneath a slab. The material expands in controlled stages to fill space and raise the concrete. Product chemistry, density, equipment, port layout, and installation practices vary.
General decision support only. The cited material does not diagnose subsurface conditions, select a contractor, or guarantee an outcome for one property.Supporting claim
The proposal should name the system: Ask for the product or system, intended use, installation approach, and provider training. The answer should connect the product to the slab, target movement, loading, moisture, utilities, and finish requirements.
This section summarizes general decision criteria within the cited sources' combined scope. It does not establish the condition, cause, compliance status, or repair fit of one property.Supporting claim
Controlled expansion is the job: Expansion can be useful because material reaches spaces and develops lift, but uncontrolled movement can damage slabs, fixed structures, pool components, or utilities. The provider should inject in measured stages and identify stop conditions.
This section summarizes general decision criteria within the cited sources' combined scope. It does not establish the condition, cause, compliance status, or repair fit of one property.Supporting claim
Foam does not replace diagnosis: Polyjacking can change support and elevation. It does not automatically repair active leaks, drainage, deteriorated concrete, roots, or structural problems. Those conditions belong in the inspection and exclusions.
This section summarizes general decision criteria within the cited sources' combined scope. It does not establish the condition, cause, compliance status, or repair fit of one property.Review 6 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.GREAT STUFF Gaps and Cracks Insulating Foam Sealant
DuPont
A common consumer canned foam is marketed to fill, seal, and insulate small household gaps and penetrations.
Limit: Product-specific manufacturer information. It does not support using canned sealant as a structural slab-lifting system.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 slab assessment
No obligation. The request may be shared with one independent provider only after consent. Provider availability is not guaranteed.
- Current slab condition and desired finished elevation
- Proposed material or named product system
- Port finish, exclusions, use instructions, and warranty questions