Stabilize the Soil Causing Your Foundation Problem, Not Just the Symptom.

Underpinning transfers your home's weight onto piers driven down to load-bearing strata. The structure changes how it carries load. Soil stabilization changes the soil itself so it can carry the load it was supposed to. On a job where the soil is the problem (collapsing loess, void from a plumbing leak), stabilization is cheaper, less invasive, and addresses the root cause. On a job where the soil 30 feet down won't ever bear the load, underpinning is the right call. Epp Foundation Repair quotes whichever method the diagnosis supports.

Three diagnostics: a moisture probe at 6, 18, and 36 inches under the affected area (saturated soil at depth points to a leak or drainage issue), a calibrated crack monitor re-measured at 30 to 90 days (active widening points to ongoing soil movement), and a review of the original construction (uncompacted backfill, missing downspouts, plumbing under slab). About 70% of residential settlement in the four-state region traces back to soil rather than the structure.

Residential polyurethane chemical injection runs $5 to $15 per square foot of treated area, or $400 to $1,200 per injection point. A typical small-area job (one settled corner of a slab or porch) lands between $3,500 and $6,500. Whole-perimeter stabilization on a problem lot reaches $15,000 to $25,000. Helical anchor stabilization runs $1,500 to $2,500 per pier with 5 to 8 piers typical. Written estimate after on-site inspection reflects your scope.

Three scenarios where Epp Foundation Repair declines or redirects: organic or peat soils (rare in this region but present near some river bottoms) where injection won't develop bearing capacity; active slope failures where a licensed geotechnical engineer must design the fix; and lots where the underlying issue is uncorrected surface drainage. In the third case, fixing downspouts and grade for a few hundred dollars stops the settlement that would have cost $15,000 to inject.

The resin reaches 90% of its compressive strength within 15 minutes of injection and full cure within 24 hours. Epp Foundation Repair returns equipment to service the same day on most residential jobs. Cementitious grout used for mid-soil injection cures over 4 to 7 days and requires a longer wait before re-loading. The crew schedules and explains both timelines on the contract.

Injection ports are 5/8-inch holes drilled through the slab or footing. Small enough that interior ports are patched flush and barely visible. Exterior ports placed through driveway or sidewalk concrete leave a quarter-sized patch in the original surface. Polyurethane resin is chemically inert and won't migrate into landscape soil. Epp Foundation Repair documents every port location on the warranty file in case future work is ever needed in the same area.

Cured polyurethane and cementitious grout are permanent. The cured material is more stable than the soil around it and won't break down. What can fail is the surrounding soil if the original cause (drainage, plumbing leak, irrigation pattern) isn't corrected. Epp Foundation Repair carries 10-year material and workmanship warranties on stabilization installations, transferable to a new owner. The crew will tell you up front whether the drainage corrections are required to keep the warranty in force.

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.