Leveling and void filling close pathways beneath the slab that allow water to migrate and pool. Filling voids eliminates the hollow space where water accumulates before pushing through floor cracks. However, hydrostatic pressure from a high water table requires a drainage system and sump pump and leveling alone does not address active water infiltration driven by water table pressure.

Most residential basement slab leveling is completed in 2 to 4 hours. The foam cures in 15 minutes and the space can be reoccupied the same day. Drill holes are patched with hydraulic cement mortar during the job. There are no fumes, extended drying times, or heavy equipment that require vacating the space overnight.

Center settlement is common in basements where soil beneath the interior of the slab eroded or consolidated over time while the perimeter supported by foundation wall footings remained stable. This is a classic void formation scenario addressed by foam injection. A tap test across the floor surface will identify hollow areas beneath the slab before any drilling begins.

Two-part polyurethane foam used for slab leveling is inert once its chemical reaction completes within minutes of injection. It produces no off-gassing after curing, is not water-soluble, and does not attract pests. The process generates a brief odor during injection that dissipates within a few hours with ventilation.

Interior slab leveling targets only the basement floor slab and the soil directly beneath it. Foundation walls and footings are separate structural elements not affected by the foam injection process. If the floor settlement is related to foundation movement rather than soil erosion, Scaldino will identify this during assessment and recommend the appropriate foundation repair.

In most cases yes. Polyurethane foam injection requires only 5/8-inch drill holes through the slab. If a finished floor such as tile, hardwood, or vinyl plank is installed over the concrete, small holes can often be cored through the flooring, the slab leveled, and the holes patched and refinished. Feasibility depends on the flooring type and degree of settlement.

Concrete void filling injects polyurethane foam or grout beneath a slab to fill hollow spaces that have formed due to soil erosion or washout. Voids are common under driveways, garage floors, and basement slabs. Left untreated, voids cause the slab to flex and crack under load and filling them stabilizes the surface before collapse occurs.

Interior slab leveling with polyurethane foam is safe for occupied residential and commercial spaces. The foam is inert after curing and produces no harmful off-gassing. The process uses small drill holes patched after injection, causing minimal disruption to flooring finishes and allowing same-day reoccupation.

Concrete leveling typically costs 50 to 75 percent less than full replacement by eliminating demolition, disposal, new pours, and extended curing time. For slabs that are structurally sound but have settled, leveling is almost always the more cost-effective solution. Replacement is only warranted when the concrete itself has deteriorated beyond repair.

Most residential concrete leveling jobs are completed in one to three hours depending on the number of slabs and severity of settlement. Polyurethane foam injection cures in 15 minutes, allowing same-day use. Mudjacking requires 24 to 48 hours before the area can be driven on.