Structurally Restore Cracked Poured Foundations With Two-Part Epoxy

Pricing varies with crack length, accessibility (finished basements with drywall to cut and patch cost more), and whether multiple cracks are being treated in one visit. Customized Repair Estimate after on-site inspection reflects your scope.

Epoxy is a structural repair. The cured resin bonds the two sides of the crack together and restores most of the wall's original tensile strength. Polyurethane is a water seal. It foams on contact with moisture and stops leaks, but it has minimal structural value and stretches under load rather than holding. The two are often treated as alternatives. Epp Foundation Repair uses both sequentially on actively leaking structural cracks: polyurethane first to stop the water, then epoxy 2 to 4 weeks later to provide the structural bond. Either material alone usually fails to deliver what the homeowner actually needs.

Epp Foundation Repair provides a 2-year warranty against seepage at the specific repaired crack. If the crack ever opens again or water ever returns at that location during normal soil and weather conditions, and settlement or bowing is not the cause, Epp returns to re-inject at no charge. The warranty is transferable to the next homeowner. Buyers and their inspectors regularly verify this when a property changes hands. The warranty does not cover new cracks that form in other locations, and is void if settlement or bowing of the walls reopens the repair, because those typically indicate a separate movement issue (settlement, bowing, or footing shift) that needs structural diagnosis rather than another injection.

Cracks do not get smaller on their own. They get larger every freeze-thaw cycle, and Nebraska, Iowa, Kansas, and Missouri average 50-plus freeze-thaw events per year. Water trapped in a hairline crack expands roughly 9 percent when it freezes, jacking the crack wider each winter. Once a crack passes 1/10 inch and shows offset (one side higher than the other), the wall has typically lost enough structural integrity that injection alone may not be sufficient. Carbon fiber or piers enter the conversation, at five to ten times the cost. Catching a structural crack at the hairline-to-eighth-inch stage is the cheapest foundation repair you'll ever do.

No, not effectively. Concrete block (CMU) walls have hollow cells and mortar joints, which means an injected resin doesn't bond a continuous concrete face. It spreads into voids and weeps out joints. Epp Foundation Repair does not inject epoxy into block walls as a structural repair. Block walls with significant cracking are typically diagnosed as stair-step joint failures (bowing or settlement) and treated with carbon fiber reinforcement, wall anchors, or in advanced cases, partial replacement. Surface-applied epoxy paint or hydraulic cement may be appropriate for cosmetic block crack patching, but that is a different product and a different scope.

Three rough field indicators. First, width: hairline cracks (less than 1/32 inch) are usually cosmetic shrinkage; cracks wider than 1/16 inch are usually structural. Second, offset: if one side of the crack is higher, deeper, or laterally shifted relative to the other, the wall has moved and the crack is structural. Third, growth: a crack that visibly changes between two crack-monitor measurements 30 to 90 days apart is active and structural regardless of width. Epp Foundation Repair installs crack monitors at no charge during the initial inspection and revisits to read them. The only way to know for certain is to measure and wait.