Search by symptom, surface, method, estimate question, or property type. Each page starts with a direct answer, then explains the conditions that change it.
Sunken slabs, trip edges, ponding water, hollow sounds, voids, and cracked concrete.
Sunken concrete may be lifted when the slab is still usable and the main problem is lost support or elevation. Mudjacking and polyurethane foam are common lifting approaches. Severely broken, deteriorated, root-displaced, or badly designed slabs may need replacement instead.
Read the focused answerThe repair depends on why the elevation changed and how much usable concrete remains. Low intact panels may be lifted, small raised edges may be ground in some situations, and broken or root-displaced panels may need replacement. The finished walking transition should be measured and documented.
Read the focused answerLeveling may improve ponding when settlement changed the slab elevation and a safe target slope can be restored. It will not fix every drainage problem. Downspouts, drains, grading, leaks, joint design, and surrounding elevations may require separate work.
Read the focused answerA hollow sound can suggest a change in support, thickness, bonding, or subsurface conditions, but it does not prove the size or cause of a void. An inspection should combine sound, elevation, movement, cracks, edges, drainage, and project history before recommending repair.
Read the focused answerA provider may place a suitable grout or expanding material beneath an accessible slab to restore support, raise elevation, or both. The plan should identify the objective, likely void area, injection pattern, nearby constraints, material, target, and uncertainty.
Read the focused answerSome cracked slabs can be lifted when the pieces still behave as stable sections and the repair objective is support or elevation. Fragmented, crumbling, badly displaced, or structurally inadequate concrete is more likely to need replacement. Existing cracks usually remain visible.
Read the focused answerDriveways, garage aprons, patios, pool decks, sidewalks, steps, and porch landings.
It may help when an exterior driveway or apron panel settled and changed the surface slope. The provider still needs to measure the garage floor, threshold, door clearance, connected panels, runoff direction, downspouts, drains, and any active water source.
Read the focused answerThe method depends on whether the panel is high, low, broken, or still being displaced. Lifting can address a suitable low panel, grinding can reduce a limited high edge, and replacement may fit severe cracking, root conflict, or a needed redesign.
Read the focused answerPotentially, when the patio remains suitable for lifting and doors, siding, foundations, posts, drains, utilities, and adjoining slabs leave room for a safe target slope. Active runoff or drainage problems may require separate work.
Read the focused answerSome intact panels may be lifted, but the pool shell, coping, separation joint, skimmers, drains, plumbing, handrails, and applied finishes must be identified first. Movement targets should be conservative around fixed pool components.
Read the focused answerA suitable exterior apron or driveway panel may be lifted after the provider confirms which slab moved, measures the garage floor and threshold, checks connected panels and drainage, and sets a target that avoids pressure on the foundation or door system.
Read the focused answerSome independent concrete landings or step units can be lifted when they remain suitable and can move without binding a door, railing, column, foundation, or adjoining walk. Attached, monolithic, badly cracked, or structurally constrained work may require another repair.
Read the focused answerSlabjacking, mudjacking, polyjacking, foam injection, grinding, lifting, and replacement.
Slabjacking is a broad term for raising a concrete slab by placing material beneath it. Mudjacking commonly refers to slabjacking with a pumpable cementitious or soil-based slurry. Contractors may use the terms differently, so the proposal should identify the actual material and process.
Read the focused answerPolyjacking 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.
Read the focused answerA provider drills ports and injects a two-part polyurethane system beneath the slab. The material expands, occupies space, and can raise the concrete when placed in controlled stages. The safe plan depends on slab condition, fixed points, utilities, drainage, target elevation, and product details.
Read the focused answerGrinding removes material from a high edge; leveling raises a suitable low slab and restores support. Grinding may fit a limited projection when enough concrete remains. Lifting may fit settlement. Broken panels, roots, drainage, or design problems can require replacement or combined work.
Read the focused answerOften, yes. An intact settled slab may be raised by placing grout or expanding polyurethane beneath it. Lifting is less suitable when concrete is fragmented, crumbling, badly root-displaced, structurally inadequate, or needs a new shape, slope, reinforcement, or finish.
Read the focused answerScope, minimum charges, project duration, return to use, records, and warranty language.
A useful estimate identifies the affected slabs, target elevations, proposed material, port and patch finish, access, protection, cleanup, return-to-use instructions, exclusions, change-order rules, payment terms, and warranty. A price without that scope is difficult to compare.
Read the focused answerA provider must mobilize equipment and labor, inspect, protect the site, drill and inject, monitor movement, patch ports, clean up, document the work, and support a warranty even when only one small panel is involved. Those fixed costs can create a project minimum.
Read the focused answerDuration depends on the number and size of slabs, access, method, port layout, amount and complexity of movement, nearby structures or utilities, material behavior, patching, cleanup, and unexpected subsurface conditions. Ask for separate arrival, work, cure, and return-to-use windows.
Read the focused answerFollow the provider’s written, product-specific instructions. The lifting material, patch material, temperature, moisture, slab condition, amount of movement, vehicle weight, and other repairs can all affect return-to-use timing. Do not rely on a generic internet number.
Read the focused answerA useful warranty identifies the legal provider, covered slabs, covered condition, measurement threshold, duration, exclusions, owner maintenance duties, transferability, claim process, inspection rights, and remedy. A long duration means little when the covered event and remedy are vague.
Read the focused answerRetail, multifamily, HOA, warehouse, property-management, and business continuity needs.
A commercial scope should identify affected slabs, ownership and access, pedestrian or vehicle use, operating-hour constraints, utilities, drainage, target elevations, method, protection, traffic control, documentation, return-to-use timing, exclusions, and warranty.
Read the focused answerUse a repeatable inspection and repair log: location ID, photographs, measurements, resident route, urgency, cause clues, method, provider, access plan, completion record, and follow-up date. Lifting, grinding, replacement, or combined work should follow the condition at each panel.
Read the focused answerStart with ownership and responsibility, then build a location inventory with photographs, measurements, route use, cause clues, priority, and temporary controls. Bid the same documented locations and require method, finish, access, closeout, and warranty details.
Read the focused answerRecord a unique location ID, wide and close photographs, transition measurements, surface condition, route use, drainage, roots or utilities, temporary controls, ownership, priority, recommended method, work status, provider, completion evidence, and next review date.
Read the focused answerSome industrial slabs can be stabilized or lifted, but rack loads, forklifts, joints, reinforcement, drains, utilities, equipment, floor-flatness requirements, production, and structural conditions require project-specific review. Engineering or specialty testing may be appropriate.
Read the focused answerInspect the full customer route and choose lifting, grinding, replacement, or combined work based on panel condition and cause. Coordinate doors, ramps, curbs, utilities, drainage, deliveries, barriers, business hours, accessibility review, and documented reopening.
Read the focused answerThe library explains the decision. A site review determines whether your slab, access, and target fit a real project.
Start with the slab and ZIP. Add contact details on the next step.