Foundation Crack Repair Cost
Estimate a crack repair from its length and your price per foot for epoxy or polyurethane injection, plus any flat setup fee.
Calculator
A 8 ft crack at $60.00/ft (epoxy or polyurethane injection) is about $630.00 with your setup fee. A widening or leaking crack can signal movement — have an engineer look before you seal.
Most poured-concrete foundation cracks are sealed by injecting a resin the full depth of the wall: epoxy, which is rigid and structurally bonds the concrete back together, or polyurethane, which stays flexible and is aimed at stopping water. Both are commonly priced by the linear foot of crack plus a flat minimum or trip charge, and that is exactly what this calculator models. Measure the crack, enter the per-foot rate from your quote, and add the setup fee.
It is deliberately simple because crack sealing itself is simple — the judgment is in deciding whether a crack is just a crack. A hairline shrinkage crack is a maintenance item; a widening, stair-stepped or actively leaking crack can be the visible edge of movement that costs far more to address. This tool prices the seal; the notes below help you decide if a seal is really all you need.
Formula
A length times a rate, plus a fixed fee:
total = crack_length × price_per_ft + setup_fee
The per-foot rate captures the injection material and labor; the setup or trip fee is the flat minimum many contractors charge so a tiny job is still worth the visit. Because both numbers come from your quote, the estimate reflects epoxy or polyurethane pricing equally — just enter the rate for the method you were quoted.
Worked example
An 8 ft crack, quoted at $60 per foot for polyurethane injection, with a $150 minimum:
- Injection = 8 ft × $60 = $480
- Setup / trip fee = $150
- Total = 480 + 150 = $630
Swap in an epoxy rate, or a longer crack, and the number scales linearly — the setup fee just sets the floor for very small repairs.
When a crack is more than a crack
Epoxy vs polyurethane. Epoxy cures hard and re-bonds the concrete, so it is the usual choice when the goal is to restore some structural continuity to a non-moving crack. Polyurethane foams and stays flexible, which makes it forgiving of tiny seasonal movement and good at chasing water, so it is often used for leaks. Contractors price them similarly by the foot, and the right one depends on why the crack is there — enter whichever rate you were quoted.
Read the crack first. Vertical or diagonal hairlines in poured walls are frequently harmless shrinkage from curing. Warning signs are different: a crack wider than about a quarter inch, one that is visibly wider at the top or bottom, horizontal cracks (a sign of soil pressure pushing the wall in), stair-step cracks in block, or a crack that keeps growing. Those can signal settlement or a bowing wall, and sealing them without addressing the cause just hides the symptom. Have a licensed structural or geotechnical engineer assess a crack that is moving, leaking under pressure or paired with sticking doors and sloping floors before you seal it.
Fix the water too. A crack that leaks is telling you about drainage as much as concrete. Sealing the inside face may stop the drip today, but if hydrostatic pressure keeps building against the wall, water will find the next path. Pair a repair with the drainage and waterproofing tools so you spend once. And remember this is a planning estimate: the injection rate you enter reflects your market, not a fixed national price.