Epp Fills the Void and Lifts Your Garage Slab to Grade.

Polyurethane foam garage floor lifts run $1,500 to $5,000 for a typical residential 2-car garage, depending on lift height, void volume, and crack count. Foam alone is roughly $5 to $25 per square foot. Crack sealing is $200 to $600 per crack. Written estimate after on-site inspection reflects your actual scope.

Settlement shows up as an out-of-level slab. Set a 4-foot level across the floor and look for daylight under one end, or roll a marble across and watch where it goes. Voids under the slab make a hollow sound when tapped with a steel rod or wrench. A crack without settlement is a thinner, hairline-to-narrow line with no elevation difference across it. Epp's inspector documents both on the estimate.

Replace when the slab has multiple structural cracks crossing it, when sections of concrete have broken loose, when settlement exceeds 4 to 6 inches and lifting would over-stress the slab, or when the concrete has reached end of life. Epp's inspector calls it on the report. Roughly 1 in 8 garage floor inspections in 2024 came back as replacement recommended.

Not until the leak is repaired. Lifting a slab over an active leak is a short-term fix. The fines will keep washing out, the void will reopen, and the floor will drop again. Epp's inspector flags the moisture pattern on the estimate, the homeowner coordinates a licensed plumber, and Epp returns to lift and seal once the leak is confirmed repaired.

No. Polyurethane foam reaches full load capacity in about 15 minutes after injection and is rated well above residential vehicle weights. The garage is drivable the same day. Foam at 2 to 4 pounds per cubic foot finished density supports thousands of pounds per square foot once cured.

That's the cold joint between the heated interior slab and the exterior driveway apron. Through 50-plus freeze-thaw cycles each winter, the apron lifts and drops; the interior stays stable; the joint opens. Water enters, washes fines, and the corner settles. Epp seals the cold joint as part of standard garage floor scope and lifts the apron back to grade where possible.

Floor only on garage floor scope. The stem walls and footings of a garage are foundation work. Covered under foundation repair. If the inspector finds wall movement, settlement of the garage foundation itself, or cracks in the stem walls, the estimate covers that as a separate foundation-repair scope. Floor and foundation are diagnosed together but priced and scoped separately.

Let's take the first step toward a healthy home.

A local specialist will inspect your foundation, walk you through the findings, and send a clear estimate. no cost, no pressure.